CIDCO Appoints W. Howard Leyda as Vice President of Worldwide Marketing.

Business Editors

MORGAN HILL, Calif.--(BUSINESS WIRE)--March 6, 2000

CIDCO Incorporated (Nasdaq:CDCO), a worldwide leader in Internet appliances and telephony, has named W. Howard Leyda as Vice President of Worldwide Marketing. Leyda brings 12 years of consumer and technology marketing experience to CIDCO's management team. He joins CIDCO from Iomega Corporation where he served as Director of Marketing for the Americas and successfully directed the launch of several new products into the consumer and business markets.

Mr. Leyda will report to Bill Sole, Executive Vice President of Worldwide Sales and Marketing, and will be responsible for the marketing strategy of the MailStation Internet appliance and follow-on products. Efforts will focus on branding, advertising, public relations and channel marketing for the retail channel. "We are pleased to have Howard join the team," said Sole. "With Howard's experience and success in consumer retail marketing, and the attractive position of the MailStation, we have a formula for great success."

Leyda is joining CIDCO amidst the most exciting year since the company's founding. In 1999, CIDCO introduced the MailStation, the industry's first dedicated e-mail Internet appliance. Since MailStation's introduction, demand for this type of simple e-mail technology has experienced strong growth. In 2000, CIDCO will aggressively expand its retail channel penetration to make MailStation broadly available in the consumer market. CIDCO's first step to make the MailStation available across the United States has been realized by signing on CompUSA, Good Guys and Staples.

"I am excited to join CIDCO a leader and innovator in the Internet appliance market," said Leyda. "I am joining CIDCO at a time where we have the potential to further revolutionize the Internet industry. CIDCO's goal to bring the Internet to the mass consumer market is the next logical step in the Internet revolution. I look forward to leading the marketing strategy to bring MailStation and other follow-on products to the mass consumer market."

MAILSTATION: THE INTERNET FOR EVERYONE

E-mail has become a worldwide phenomenon and the MailStation is at the forefront of the new era of communications by giving consumers a convenient, easy and affordable way to keep in touch with friends and family anywhere in the world. CIDCO's MailStation is ideally priced for the mass consumer population at only $9.95 monthly Internet service fee and $99.99 for the MailStation, after $30 mail-in rebate.

ABOUT CIDCO INCORPORATED

CIDCO Incorporated (NASDAQ: CDCO), founded in 1988, is a worldwide leader in Internet and telephony products, services and appliances that empower consumers to communicate simply and easily over advanced telephony networks and the Internet. Through its alliances with many of the world's leading telephone companies, CIDCO develops advanced network appliances such as network feature telephones, Caller ID devices, voice mail navigation appliances and Internet appliances that enable consumers to maximize the value of telephony networks and Internet services. CIDCO introduced its first Internet appliance in 1998 for a world moving into the developing Internet appliance era and is extending this vision to devices that will make e-mail and other information services readily available to consumers that don't have access to or require traditional computers. The company is headquartered in Morgan Hill, California at the south end of Silicon Valley. For additional information, visit www.cidco.com or call [phone].

In addition to the historical information contained herein, statements in this press release may contain forward-looking statements within the meaning of the Federal securities laws and are subject to the safe harbors created thereby. The following are among the factors that could cause actual results to differ materially from the forward-looking statements: business conditions in the telecommunications industry and general economies, both domestic and international; lower than expected customer orders and/or average selling prices; failure to successfully implement a national retail distribution channel and a brand marketing campaign; failure to obtain significant subscriber growth; failure to successfully execute on restructuring plans or revised business strategies; competitive factors; lower than expected consumer product acceptance; changes in product mix or distribution channels; natural disasters/acts of God; and technological difficulties and resource constraints encountered in developing and/or introducing new products. Forward-looking statements contained in this press release regarding expected financial

results, industry trends, sales and future product development and business strategies and activities should be considered in light of these factors and those factors discussed from time to time in the Company's public reports filed with the Securities and Exchange Commission, such as those discussed under "Factors That May Affect Future Results" in the Company's report on Form 10-K for the year ended December 31, 1998, and its Form 10-Q for the quarter ended September 30, 1999.

Note to Editors: MailStation and CIDCO are trademarks of CIDCO Incorporated. All other trademarks are the property of their respective owners.