Consider remote-control options.In order to control a remote PC, information must he transmitted via an Internal network or modem-to-modem connection from one PC to the next. More often than nut, remote-control applications rely on bitmapping as a means of communication between the two computers. Because a bitmap uses a fixed or raster graphics See bitmapped graphics. (graphics) raster graphics - Computer graphics in which an image is composed of an array of pixels arranged in rows and columns. Opposite: vector graphics. method of specifying an image, the image cannot he immediately rescaled by a user without losing definition. Several remote-control applications use this as their primary way of conducting a remote-control session. Other remote-control applications use GDI (Graphics Device Interface) The traditional programming interface (API) for output in Windows. When an application needs to display or print, it makes a call to a GDI function and sends it the parameters for the object that must be created. hooking and vector graphics The representation of a digital image as points, lines and other geometric entities. All computer-aided design (CAD), drawing and diagramming programs create vector graphics formats, such as AI, DXF and WMF (see graphics formats). transfers to carry out remote-control sessions. Vector graphics is the creation of digital images through a sequence of draw commands or mathematical statements that place lines and shapes in a given two-dimensional or three-dimensional space Three-dimensional space is the physical universe we live in. The three dimensions are commonly called length, width, and breadth, although any three mutually perpendicular directions can serve as the three dimensions. Pictures are commonly two dimensional, they lack depth. . GDI hooking involves intercepting these draw commands and sending a copy of these commands to the remote PC for reproduction. Because GDI hooking sends commands, as opposed to actual files, from one PC to the next, the remote-control sessions are almost always faster than bitmapping and use less of the network's bandwidth to conduct a session. Also, vector graphics can he quickly rescaled, allowing for a quicker screen transmission and refresh rate The number of times per second that a device, such as a display screen or DRAM chip, is re-energized. See vertical scan frequency and dynamic RAM. (hardware) refresh rate . GDI hooking is only valid with Windows-to-Windows sessions, and even during a GDI hook, there are still bitmaps that need to he transferred. Because of this. remote-control sessions cannot rely entirely on GBI GBI Georgia Bureau of Investigation GBI Green Building Initiative GBI Ground Based Interceptor GBI Grand Bahama Island GBI Green Bank Interferometer GBI Generic Bus Interface GBI Gain By Inventory GBI Garrett Bureau of Investigation hooking-but a remote-control application should enable the use of GDI hooking whenever possible. There are several features that are offered in remote-control applications that can improve the monitoring process. With some applications, the people being watched will always he aware that they are being watched. Other applications allow keeping this process more discreet by preventing the person being monitored from knowing that he is being watched. If an administrator, however, does not want the IT people to be able to monitor what he is doing, an approval feature is one way to allow some privacy. With this feature, a user can give someone monitoring the computer permission to do so. Some remote-control applications can enable remote demonstrations by allowing more than one user to monitor a computer at a time. Remote-control software should provide a way to keep an activity lag on a computer being monitored. With a record feature, a remote-control application will keep a visual record of any changes made to that equipment. Some applications allow designating a specific location to save the recording. Security features are essential. One of the most common types of security is encryption, which protects against third parties being able to read data streams transmitted between two entities. A remote-control product should have several layers of encryption-from keyboard encryption to data integrity encryption. Some products provide an option where the developers can embed a unique security code into their applications. This security code must be present an both ends for a connection to he established. Such a feature would prevent a hacker, without the embedded password, from connecting to a host. Some products offer security servers that can authenticate (1) To verify (guarantee) the identity of a person or company. To ensure that the individual or organization is really who it says it is. See authentication and digital certificate. (2) To verify (guarantee) that data has not been altered. each user individually. Companies with a variety of platforms operating throughout their property will want a remote-control application that can provide stable cross-platform remote-control sessions. This will allow their IT departments to maintain a Macintosh computer lab from an IBM (International Business Machines Corporation, Armonk, NY, www.ibm.com) The world's largest computer company. IBM's product lines include the S/390 mainframes (zSeries), AS/400 midrange business systems (iSeries), RS/6000 workstations and servers (pSeries), Intel-based servers (xSeries) desktop, or a Linux server from a handheld PC  An editor has expressed concern that this article or section is .Please help improve the article by adding information and sources on neglected viewpoints, or by summarizing and . Therefore, when purchasing a remote-control application, make sure the application will recognize all your company's operating systems Operating systems can be categorized by technology, ownership, licensing, working state, usage, and by many other characteristics. In practice, many of these groupings may overlap. . What your company's needs are will ultimately determine which applications are best for your environment. Research your products to find out which applications meet your needs. Lastly, test the potential candidates on your network. This way, you will have the opportunity to identify any conflicts that might arise with the application. For more information from Crosstec: www.rsleads.com/407cn-265 Paul Amsden is director of product planning Product Planning is the ongoing process of identifying and articulating market requirements that define a product’s feature set. See also
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