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Heuristic Evaluation: Comparing Generic and Specific Usability Heuristics for Identification of Usability Problems in a Living Museum Mobile Guide App.

1. Introduction

Cultural and heritage sites have a long history of adapting mobile technologies as visitor's guides. According to Tallon [1], mobile guide technology was first used at Stedelijk Museum in Amsterdam in 1952. Changes made throughout the years ranged from the digitization of the objects to the use of emerging technologies. The evolution of mobile guide technologies in cultural heritage sites has transformed the visitors' experiences at such venues. Kenteris and Gavalas & Economou [2] classified mobile guides used in museums into four different groups: (1) mobile guide applications, (2) web-to-mobile applications, (3) mobile phone navigational assistants, and (4) mobile web-based applications.

The use of smartphone technologies, particularly apps to replace other mobile guide technologies at cultural and heritage sites, could eliminate some issues faced by visitors. For example, it reduces the learning curve as visitors do not need to learn how to operate the technology and can focus on the content in the mobile guide. Jaen, Mocholl, Esteve, and Bosch & Canos [3] highlighted this as an important criteria in designing the multimedia content browsers on mobile guides. In addition, the use of different types of mobile guides in cultural heritage sites also enables the visits to become more visitor-oriented and not fully controlled by curator, particularly through the personalization of information in accordance to visitors' need [4-6]. A recent study by Pallud [7] on the use of interactive technologies in a French museum to engage the audience and promote positive learning experience suggested that the ease of use and interactivity features of the technologies provided could influence the emotional process (authenticity and cognitive engagement), which in turn could influence learning. A prior research by Othman et al. [8] also suggested that visitors who use multimedia guide during their visit to cultural heritage site are significantly more engaged in the experience as compared to those who do not use any multimedia guides.

Usability and user experience (UX) have always been the predominant concerns of software products [9]. Helyar [10] highlights that mobile apps suffered from usability issues such as inept content and interface design. This resulted in the lack of user acceptance and the applications being rejected within months of the launch [11]. Zhang and Adipat [12] discussed the challenges, methodologies, and issues in the usability testing of mobile application. For example, the unique features of mobile devices pose challenges in usability testing such as mobile context of use, connectivity which is usually related to the bandwidth or network, small screen size, different display resolutions, limited or different processing capabilities, and data entry methods.

Gomez et al. [13] suggested that usability evaluation technique can be carried out during the implementation of a particular system to make sure the system enables users to achieve their goals efficiently. For example, the usability aspects of interacting with the smartphone apps, presenting information on the screen, learning about the smartphone apps' functionality, and controlling the devices prior research have shown that inspection method such as heuristic evaluation (HE) is effective in detecting usability problems in an interface compared to other methods [14, 15]. The issues identified by experts during the heuristic evaluation will be rectified before conducting the usability testing with actual visitors.

Most of the time, specific heuristics will work better as it is completed by specific usability checklists. However, a previous study by Law and Hvannberg [16] also highlights that it is difficult to map the problem to the matching heuristic. Hvannberg, Law, and Lerusdottir [17] suggested a framework to conduct heuristic evaluation by comparing two sets of heuristics and process, procedure, and support to conduct usability evaluation to ensure its' effectiveness. Joyce and Lilley [18] argued the effectiveness of the previously developed specific heuristic such as Inostroza' TMD heuristics due to the similarity of the heuristics with Nielsen's traditional heuristics. They further mentioned that experts may feel ambiguous as the heuristic title remain the same although the definitions are different. The SMASH heuristics also suffered from the same issues of having the same name with the traditional heuristics by Nielsen although only one heuristics modified and one new heuristics added. It is important to highlight that the issues of mapping the usability issues with the accurate heuristics could lead to confusion in construing the issues. This can be an obstacle to designing the best solution the problem. Thus, the objective of this study is to examine the importance of integrating domain specific heuristics evaluation in the design and development of the smartphone apps for a living museum.

1.1. Living Museum Mobile Guide Application at Sarawak Cultural Village (SCV). The smartphone app in this study was developed as a mobile guide for a living museum, namely, Sarawak Cultural Village (SCV). SCV is chosen for this study because it was set up to preserve and showcase the finest Sarawak cultural heritages for the past 25 years. SCV also serves as one of the remaining sources of Sarawak cultures and its' ethnics [19]. In addition, there are only a handful of living museums (living museum is best described by Anderson [20] as way of simulating life in another time, particularly the past that best presented as a living history filled with activities that could possibly have an impact on learning experiences.) in Malaysia and SCV is considered as one of the best places to visit. Furthermore, SCV acts as a medium to preserved cultural heritages (i.e., architectures, artefacts, costumes, etc.) of major ethnics in Sarawak. Dellios [21] argued with the development of such themed museums and how these cultural villages could be considered as on par with the authentic traditional villages at the outskirts of civilization. She further acknowledged that this is possibly a solution to the various issues in cultural tourism in Sarawak. Although tourists are eager to visit the homes and experiencing the lives of different cultures, previous studies raised concerns associated with disturbing the real lives of the residents at traditional villages [19] and possibilities of endangerment or troubles during the visit [22, 23].

Hitchcock and Stanley & Siu [24] described living museum as a venue that combined tangible and intangible cultural heritage that influenced by the open-air folk museum in North America and Europe. They further discussed two types of living museum in South-east Asian such as China Folk Culture Village in China and Taman Mini museum in Indonesia, while Anderson [20] discussed the various types of living museum in Europe and North America.

Anderson [20] discussed three main reasons why living museums were built: to effectively interpret the tangible and intangible culture; a place for research to test archaeological thesis or ethnographic study; and a place for visitors to actively participate in the activities provided as part of learning experiences. Being a living museum, SCV has a different setting compared to a conventional museum and fulfilled 2 main reasons why living museums were built previously described by Anderson [20]. In SCV, groups of people (staffs) showcase the lives, daily activities, and artefacts of the various ethnic communities in Sarawak. The staff are the source of information to the visitors because minimal or no information is provided due to the natural setting of SCV. When there is a lack of available staffs such as during lunch breaks, this has a negative impact on the overall visitors' experience because visitors could not get the sufficient information when needed. Previous studies highlight the importance of different attributes particularly facilities and services provided to the visitors at SCV to improve their experiences [25, 26].

The introduction of a smartphone mobile guide app for SCV could possibly have a positive impact on visitors' experience because it offers information on the go to the visitors that can be accessed before, during, and after each visit. However, delivering a mobile guide app with unresolved usability issues will jeopardize this positive impact on the visitors' experience. It is important to address the usability issues in mobile guide applications before being deployed for use by visitors at the cultural and heritage sites.

1.2. Designing for User Experience (UX). Designing for user experience UX is not trivial, particularly mobile applications that require the users to seamlessly interact with the mobile applications and their environment. Charland & Leroux [27] discussed the importance of UX in both native and web mobile application development to ensure its adoption. They further added that mobile UX can be divided into two main categories: (1) the context in which the elements must be understood but not changeable such as hardware affordances and UI convention and (2) the implementation which refers to the elements that are changeable such as the design and features. Previous studies have shown that the focus of user experience (UX) studies has changed to the UX of technologies rather than the usability of devices thus making the user studies more complicated [28-32]. Hassenzahl & Tractinsky [28] stated that the UX comprises three different perspectives: emotion and affect and the experiential and beyond the instrumental as illustrated in the Figure 1.

The emotion and affect focus on users' emotion and how it is influenced by the affective computing concept. The experiential perspective focuses on the overall users' experience with the technology, whether it is situated or temporally bounded. The idea behind of experiential in UX is the duration of users' interaction with the product. This in turn will have impact on the UX, whether the short-term interaction between users and product only lasts for a short time or can be prolonged (e.g., [33-35]). The temporally bounded experience or temporality in UX have been discussed by the various researchers in the past (i.e., [33, 36-41]). The third perspective, which is beyond the instrumental, aims to create a more holistic computing system that takes human needs into consideration. For example, different technologies have been created to support different types of users. In the context of museums, Tate Modern Museum provides handheld devices that play videos with sign language for hearing impaired visitors. The British Sign Language (BSL) was used and first piloted in 2003. Evaluation on the guides showed that users were satisfied with the guide and it significantly improved their visit with 79% of visitors agreeing that they were highly satisfied with the BSL during their visit [42].

1.3. HE and Usability Evaluation of Smartphone Apps. Although Agarwal and Ventakesh [43] pointed out that usability is not fundamentally objective but relative to evaluator' personal interaction during the evaluation, Yanez Gomez, Caballero, and Sevillano [44] suggested that the evaluation can be designed to balance the personal interpretation. HE technique and usability testing are the mainstay of modern practice among usability professionals [45]. HE is a method for finding usability problems in a specific user interface design by taking a small set of evaluators to evaluate the interface and judge its compliance with recognized usability principles such as Nielsen's heuristics [46]. HE was originally developed as a usability engineering method for evaluators who had some knowledge of usability principles.

Heuristics is a well-established set of principles used to measure usability in an interface. There are mainly two alternatives which are to use either general heuristics or specific heuristics when performing a HE [47]. In the age of touchscreen-based mobile devices (e.g., mobile standard personal computer, mobile internet devices, handhelds, or PDAs and smartphone), researchers have proposed new sets of heuristics specific to such devices. In addition, previous studies have found that it is beneficial to have a specific set of heuristics for smartphone apps [48, 49].

Fung, Chiu, Ko, Ho, and Lo [50] conducted a heuristic usability evaluation on the University of Hong Kong Libraries website and its mobile version using Nielsen heuristic and discovered five (5) different usability issues with the mobile website. This poses the question as to whether usability heuristics sets are applicable across domains or whether usability heuristics sets should be domain specific for a more definite output of usability evaluations [48, 49].

Inostroza, Rusu, Roncagliolo, Jiminez, and Rusu [47] stated that heuristic evaluation is easy to apply but it is important to have a domain specific heuristic to ensure all usability issues are covered. Specific heuristics can detect usability problems related to the application domain, but it may be hard to understand and difficult to apply. On the other hand, general heuristics are easy to understand and apply; however, it is also easy to miss domain specific usability problems.

Indeed, there have been some studies in developing specific usability heuristics to fit application contexts. Mankoff et al. [51] conducted a study on the evaluation of ambient display using two different sets of usability heuristics, Nielsen's original heuristics and a modified version of the heuristics for ambient display. The application experts in the ambient heuristics group found significantly more usability issues than Nielsen's heuristics group, proving it to be more effective than Nielsen's heuristics.

Silva, Holden, and Jordan [52] described the use of specific usability heuristics for older adults. The work was based on several previous studies on older adults, such as Silva, Holden, and Nii [53]; Chisnell, Redish, and Lee [54] and Kurniawan and Zaphiris [55]. Diaz, Rusu, and Collazos [56] also held the view that using appropriate heuristics is highly relevant. They developed and validated usability heuristics set that is specific to ecommerce websites.

A specific set of heuristics which is known as Touchscreen Mobile Devices heuristics (TMD) was proposed by Inostroza et al. [47]. They found out that 40% usability problems were identified using TMD, while only 26% usability issues were identified using Nielsen's heuristics. Thus, indicate the effectiveness of specific heuristics as compared to Nielsen' heuristics. Recently, Inostroza et al. [57] validated their TMD and named it SMASH heuristics.

These studies support the use of domain specific usability heuristics as crucial in determining domain specific usability issues. Other than SMASH heuristics, various types of heuristics for smartphone apps have been made available for HE, for example, SMART heuristics [18]; mobile usability heuristics [58]; MATcH [59]; and many other heuristics as described by Inostroza et al. [57] and Salgado & Freire [60]. We have decided to use SMART and Nielsen heuristics in this study. Details of the heuristics used in this study can be found in Tables 1 and 2.

2. Methodology

2.1. Design and Development of Smartphone Apps. This project employed the Mobile Application Development Life Cycle (M ADLC) that is specifically made for the development of smartphone apps. MADLC is commonly used in the design of Android mobile applications and was first introduced by Vithani and Kumar [62]. This system development lifecycle consists of seven stages: (1) identification, (2) design, (3) development, (4) prototyping, (5) testing, (6) deployment, and (7) maintenance.

In the identification stage, researchers analyzed existing mobile guide apps for museums and other cultural sites (i.e., [63-66]); this collected information was used as a point of references in designing the mobile guide app for SCV.

In addition, researchers made several visits to the SCV and conducted interviews with 10 staffs from different backgrounds, for example, general manager of SCV to gather insights into SCV and its future plans to ensure that the proposed mobile guide will be fully utilized. In addition, an interview with an assistant manager that oversees the operation of the SCV also took place to understand the operation of SCV and to ensure the proposed guide will not come in between the visitors and artefacts and its user experiences.

An open-ended interview with staff who were living at the SCV was conducted over a 2-weeks period to gather information and materials for the ethnic houses such as information and photographs of the architecture and the artefacts in the houses as illustrated in Figure 2. They were asked about the activities that they performed at SCV, information about various artefacts on display of different ethnicities, and their significance. For example, the information about the human skulls located above the fireplace in the Baruk (warrior house) as illustrated in Figure 3.

Furthermore, a short interview with five visitors was conducted during this stage to gather their insights and their overall experiences at SCV. It is important to get users' input from the beginning to ensure that the product will be acceptable. In addition, information searching was made by several visits to library and the ethnic foundations to gather related information about artefacts, lifestyles, culture, and architectures of the main ethnic in this study. Furthermore, online searching for related information was conducted too because people are known to disseminate knowledge using online means. In the design stage, the information from the identification stage was transformed into an initial design of the mobile guide app. Storyboards were sketched out to visualize the flow and interaction within the mobile guide app. Figure 4 shows a sketch of an interface for the app.

In the development stage, the storyboard sketches from the identification stage were transformed into a functional system using Corona SDK software development kit simulator and Notepad++. A prototype, which is a fully functional system of the basic concepts of the application, was built. Prototypes are used for testing to examine any bugs or errors with the design of the system.

The testing stage is a critical aspect in system development. Usability testing is usually carried out during this stage with actual users. However, this study employed the heuristic evaluation before user testing was conducted.

Prior to the evaluation stage, the researchers had successfully developed a mobile guide in the form of a smartphone app aimed to guide visitors at a living museum (Sarawak Cultural Village). This mobile guide is a native application that could be uploaded to the play store (Google Play, Apple App Store, etc.) whereby users can conveniently download it for free to their mobile devices.

2.2. Materials

2.2.1. SCV Smartphone App. When the users open the app, a splash screen (see Figure 5) will appear. Subsequently, users will be directed to the next screen, the map of the SCV, as illustrated in Figure 6.

When visitors tap on the "Bidayuh house" icon, they will be directed to the menu section as illustrated in Figure 7 that consists of the three different parts of the Bidayuh ethnic house; the Barok, Panggah, and Longhouse. Visitors will be provided with information about the house they selected from the menu as shown in Figure 8.

Subsequently, visitors will be directed to the floor plan of the house that shows the location of each artefacts available in each section of the house as illustrated in Figure 9. Information about each selected artefact will be provided in the next screen (for example, see Figure 10).

2.2.2. Heuristic Evaluation. To date, there are several types of heuristics available for HE that focused on smartphone. For example, touchscreen-based mobile device (TMD) heuristics [47]; SMASH heuristics [57]; SMART heuristics [18]; mobile usability heuristics [58]; mobile interface checklist [44]; MATcH [59]; and many other heuristics are described by Inostroza et al. [57] and Salgado & Freire [60].

Two types of heuristic principles were used for comparison: Nielsen's heuristics [67] and SMART heuristics [18]. The set of heuristic principles by Nielsen is a well-established instrument that has been widely used for various types of interface design. The SMART heuristics, on the other hand, is a set of heuristics developed to particularly cover all aspects of a smartphone application interface. Though the mobile usability heuristics by Bertini and Gabrielli & Kimani [58] were considered, they were not selected due to the fact that the heuristics do not focus on the usability of the application icon.

During this stage, five (5) experts were recruited to evaluate the interface and the content of the application. They were instructed to identify the usability issues and determine their severity ratings using the severity rating scale [61] to rate the severity of usability problems. The severity ratings are as follows: 4--Catastrophic Problem--users will not be able to continue to their goal, must be fixed; 3--Major Problem--users will be frustrated/have difficulty continuing to their goal, could be fixed; 2--Minor Problem--users will be frustrated/have difficulty continuing to their goal, should be fixed; 1--Cosmetic Problem--user will be having minor problems that can be easily fixed; and 0 will have no usability issues at all. They were also instructed to map the usability issues to both Nielsen's Heuristics and SMART Heuristics.

2.3. Method. Below is the procedure of the study:

(1) Briefing Session: When the participants arrived, they were asked to take a seat. Participants were briefed on the purpose of the study by the researcher.

(2) Interaction with the SCV mobile guide tour (smartphone apps): Participants were handed a Samsung mini tablet with the SCV mobile guide tour app installed. They were briefed about the purpose of the app and how it will be used at Sarawak Cultural Village. This was to help the participants visualize how it will be used and critically analyze it for any issues they might encounter, regardless of minor or major issues.

(3) Evaluation session: Participants were asked to browse the mobile guide app screen by screen and document any usability issues they found. Participants identified the usability issues and their severity ratings and mapped them to both Nielsen's Heuristics and SMART Heuristics.

(4) Debriefing Session: During the session, researchers thanked participants for their contributions and answered questions from the participants.

3. Results

The output of the heuristic evaluations was a list of usability problems with the severity scale provided in the Table 3. A total of 31 usability issues were identified. Out of the total, six issues were classified as catastrophic issues and needed immediate action while eight issues were categorized as major issues and needed to be rectified.

The usability issues listed in Table 3 were matched against the 10 Nielsen's Heuristic and SMART heuristic. Table 3 also summarized the mapping of each usability issues with Nielsen's and SMART heuristics. It is important to highlight that two (2) usability issues (issue 15 and 17) were not mapped to any Nielsen's heuristic because the issues were too specific to be mapped.

4. Discussion

Heuristic evaluation is an essential activity for securing highly usable smartphone apps and should not be disregarded in the mobile app development life cycle. This study presented an analysis of 31 usability issues. Six (6) issues (19.35%) were classified as catastrophic, while 8 issues (25.8%) were categorized as major issues. The identification of these two categories of usability problems showed that a heuristic evaluation was needed so that usability issues could be addressed before the app reached the users. In addition, heuristic evaluations are low cost tools that could be easily executed to assess and improve the identified usability issues of the system during the development phase [68].

In this study, the aesthetic problems were identified more using the SMART heuristics. SMART heuristics have two principles dealing with aesthetics (#6 and #3) that describe the principle for overall interface aesthetics and specific icon aesthetics. However, though Nielsen's heuristics #4 mentions aesthetics, the description does not elaborate on aesthetics other than minimal design. There are two usability issues (issue 15 and 17 that are related to the icons) that are not easily matched against the Nielsen traditional heuristic because it is too general and researchers have decided to classify these issues under aesthetic and minimalist design. On the other hand, it is clear in the SMART heuristic that these two usability issues were categorized under SMART13 (Create an aesthetic and identifiable icon) although there is another category that is analogous to traditional heuristic, aesthetic, and minimalist design which is SMART6: design a visually pleasing interface. Aesthetics of the visual design component of a mobile guide interface design is crucial as it can enhance visitors' engagement [69]. SMART heuristics presents more detailed principles in evaluating aesthetics.

Usability issues in terms of consistency are the main problem found by the evaluators and this can be mapped to both Nielsen's heuristics (#4) and SMART principle (#2). However, it is interesting to note that although both heuristics are related to consistency and standard, the number of issues mapped to Nielsen's Heuristic and SMART principle is 8 and 11, respectively.

This study clearly showed the need to use domain specific heuristic evaluation as opposed to the general usability heuristics because there were difficulties in determining which heuristic was more appropriate for the issues identified especially when it came to the features that were only available for the smartphone. Joyce and Lilley [18] explained these difficulties because Nielsen heuristic is too general to detect usability problems because current systems are more interactive, complex, and diverse. In addition, a study by Alsumait and Al-Osaimi [70] concluded that Nielsen's heuristic is too general and not explained in details and is not suitable to be applied to domain specific application. A similar finding by Pinelle, Wong, and Stach [71] explained that more usability issues were found when using newly developed set heuristics due to the complexity of the application. Other previous studies also supported the need to use domain specific usability heuristics (e.g., [58, 68]). Furthermore, Petrie and Power [72] also highlight that it is inappropriate to compare problem faced by users in past decades and problems faced by users in 2010s. Hence, the categorization using the SMART principle is more apt because it is recently developed and has taken into consideration current technologies, i.e., smartphone and its applications. On the other hand, Nielsen's principles were developed before the advent of smartphone technologies; hence the categorizations were more general.

5. Conclusions

This study compared two sets of heuristics, traditional and domain specific for mobile application for cultural heritage sites. It shows that domain specific measurement is more comprehensive for a more definite identification of usability issues. These issues then can be rectified so that the mobile guide application can evolve into a more usable application before the system is deployed to the target users. This will help to improve the acceptance of the application once deployed to the users at Sarawak Cultural Village through the development of a highly usable mobile guide application that enhance the user experience (UX) at these sites. Future works can focus on comparison of domain specific heuristics to define heuristics for mobile guide applications for cultural heritage sites.

https://doi.org/10.1155/2018/1518682

Data Availability

The data used to support the findings of this study are available from the corresponding author upon request.

Conflicts of Interest

The authors declare that there are no conflicts of interest regarding the publication of this paper.

Acknowledgments

The authors gratefully acknowledge the grant from Universiti Malaysia Sarawak (UNIMAS) (F04 (S148)/1128/2014(13)) and financial/nonfinancial support given by Sarawak Cultural Village (SCV).

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Mohd Kamal Othman (ID), Muhd Nur Shaful Sulaiman, and Shaziti Aman

Faculty of Cognitive Sciences and Human Development, Universiti Malaysia Sarawak, Kota Samarahan, Sarawak, 94300, Malaysia

Correspondence should be addressed to Mohd Kamal Othman; omkamal@unimas.my

Received 5 April 2018; Revised 23 July 2018; Accepted 31 July 2018; Published 2 September 2018

Academic Editor: Vesna Popovic

Caption: Figure 1: Facets of UX([28],p 95).

Caption: Figure 2: Various artefacts and activities at one of the ethnic house.

Caption: Figure 3: Human skulls were place above the fireplace in the Baruk (warrior house).

Caption: Figure 4: Mobile guide app interface sketch.

Caption: Figure 5: Mobile guide flash screen.

Caption: Figure 6: Map of SCV (location of each ethnic houses).

Caption: Figure 7: Main menu of the Bidayuh House.

Caption: Figure 8: Information about the Bidayuh Longhouse.

Caption: Figure 9: Floor plan.

Caption: Figure 10: The information about the selected artefact.
Table 1: Nielsens Heuristics.

           Nielsen's
 No        heuristics                  Description

 (1)     Visibility of           The system keeps users
          system status            informed about the
                                   current situation
                                  through appropriate
                                    feedback within
                                    reasonable time.

 (2)     Match between          The system speaks users'
         system and the        language in which it uses
           real world             words, phrases, and
                                concepts that users are
                               familiar with. It follows
                                 real world conventions,
                               making information appear
                                    in a natural and
                                     logical manner.

 (3)      User control          Provides clearly marked
           and freedom            "emergency exit" for
                                   users to leave the
                                 unwanted state without
                                 go through an extended
                               dialogue. System supports
                                     undo and redo.

 (4)    Consistency and           Users not wondering
            standards           whether different words,
                                 situations, or actions
                                  mean the same thing.
                                    Follows platform
                                      conventions.

 (5)    Error prevention           The system either
                                 eliminates error-prone
                                  conditions or checks
                                 for them and presents
                               users with a confirmation
                               option before they commit
                                     to the action.

 (6)   Recognition rather       The system minimizes the
           than recall           users' memory load by
                                making objects, actions,
                               and options visible which
                                indicated that users do
                                  not have to remember
                               every detail. Instructions
                                 for use of the system.

 (7)    Flexibility and        Speeds up the interaction
        efficiency of use        for both inexperienced
                                 and experienced users.
                                The system allows users
                               to adapt frequent actions.

 (8)     Aesthetic and         Elimination of information
       minimalist design.         which is irrelevant.

 (9)       Help users              Error messages are
           recognize,              expressed in plain
          diagnose and            language, concisely
         recover from            indicate the problems,
             errors.               and constructively
                                    suggest solution.

(10)        Help and             Although it is better
          documentation           if the system can be
                              used without documentation,
                                 it may be necessary to
                             provide help and documentation
                               for searching information
                               easily and other purposes.

Note. Adopted from "Heuristic evaluation," by J. Nielsen, 1994 [61].

Table 2: Smartphone mobile application heuristics (SMART).

 No            SMART                   Description

 (1)     Provide immediate         Users are informed
          notification of          from the immediate
         application status        application status.

 (2)      Use a theme and           Apply consistent
         consistent terms,       themes for the screen
      as well as conventions     of mobile application.
      and standards familiar      Create a style guide
            to the user         and concepts that users
                                 are familiar with such
                                  as the same effects
                                 when gestures are used.

 (3)      Prevent errors           Allows the mobile
          where possible;          application to be
        assist users should       error-proofed. If an
           an error occur        error occurs, they let
                                the users understand the

                                 error and offer advice
                                    to fix the error.

 (4)    Display an overlay      An overlay pointing out
       pointing out the main      main features allows
           features when          first-time users to
          appropriate or           get up-and-running
             requested                  quickly.

 (5)      Each interface         To ensure that mobile
          should focus on         interfaces are less
              one task            cluttered and simple
                                      to the point.

 (6)     Design a visually       Mobile interfaces that
         pleasing interface     are attractive are more
                                memorable and therefore
                               used more often. Users are
                                 also more forgiving of
                                 attractive interfaces.

 (7)   Intuitive interfaces     Mobile interfaces should
          make for easier      be easy to learn in which
           user journeys       next steps are obvious so
                                  that allows the users
                                to complete their tasks
                                         easily.

 (8)      Design a clear         Users are able to see
         navigable path to     the right way to interact
          task completion       with the application and
                                 navigate their way to
                                    task completion.

 (9)    Allow configuration     Depending on the target
       options and shortcuts        user, the mobile
                                application might allow
                                configuration options and
                                 shortcuts to the most
                                 important information
                                   and frequent tasks.

(10)     Cater for diverse     Allow the users to change
        mobile environments     the interface brightness
                                   and sound settings.

(11)     Facilitate easier       Ensure users can input
               input               content easily and
                               accurately. For instance,
                                  displaying keyboards
                                   button as clear as
                                        possible.

(12)      Use the camera,         Consider the use of
          microphone, and       the camera, microphone,
           sensors when          and sensors to reduce
       appropriate to lessen      the users' workload.
        the users' workload

(13)    Create an aesthetic        The icon should be
       and identifiable icon         aesthetic and
                                  identifiable because
                                  icon is what a user
                                    first sees when
                                   searching for the
                                      application.

Note. Adapted from "Towards the Development of Usability
Heuristics for Native Smartphone Mobile Applications," by
G. Joyce and M. Lilley, 2014 [18].

Table 3: Usability issues, average severity, and its mapping
with Nielsen's Heuristic and SMART heuristics.

                                  Average     Nielsen      SMART
Problems/Usability Issues          Rating    Heuristics   heuristic

(1) Not consistent font               4          H4        SMART 2
(2) Not consistent image              3          H4        SMART 2
(3) Not consistent heading            2          H4        SMART 2
(4) About "plan layout"               3          H4        SMART 2
(5) No "back button" at               4          H3        SMART 8
    description page
(6) Grammatical error                 2          H4        SMART 2
(7) The text is not justified         4          H8        SMART 6
(8) Lack information about            2          H4        SMART 2
    Sarawak Cultural Village
(9) No upview image more              1          H4        SMART 2
(10) Quality of the image             2          H8        SMART 6
(11) Unclear pin point                3          H4        SMART 2
(12) There is no "exit button"        4          H3        SMART 8
(13) Unattractive font colour         1          H8        SMART 6
     for heading
(14) Unclear about the                2          H4        SMART 2
     Bidayuh's houses
(15) Lack of icon use                 3         n/a       SMART 13
(16) Redundancy word "welcome"        1          H4        SMART 2
(17) Not suitable icon for            2         n/a       SMART 13
     pin point
(18) Not appropriate link menu        2          H3        SMART 8
     to exit
(19) Missed coordinate the            1          H3        SMART 8
     pin point
(20) Texts are not aligned            4          H4        SMART 2
(21) Spacing between paragraph        1          H8        SMART 6
     are not consistent
(22) No "back button" to              4          H3        SMART 8
     description page
(23) Words have been distorted        2          H8        SMART 6
(24) Does not have the exact map      3          H2        SMART 1
(25) There are no artistic            1          H8        SMART 6
     elements
(26) Topic information                1          H6        SMART 6
(27) Indicator problem                1          H2        SMART 1
(28) Does not have the                1          H8        SMART 6
     contrast colour
(29) Floor map indicator problem      3          H2        SMART 1
(30) Does not have page name          3          H6        SMART 6
(31) Does not have labelling in       3          H2        SMART 1
     type of the houses
Total usability issues correctly               29/31        31/31
  mapped
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Title Annotation:Research Article
Author:Othman, Mohd Kamal; Sulaiman, Muhd Nur Shaful; Aman, Shaziti
Publication:Advances in Human-Computer Interaction
Article Type:Report
Date:Jan 1, 2018
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