Personal Mobile Devices

(Contributed by: Daeja B., Greyson W., and Poshan K.)

T-Mobile Sidekick, Danger Hiptop, Mobiflip, Sharp Jump

Screen Shot 2014-12-03 at 11.46.59

When: Invented in 2002

Invented by: Developed by Danger Inc., a company located in Palo Alto, California. Then manufactured by Flextronics, Sharp Corporation, and at last Motorola. Each company mentioned assembled different models during different time periods.

Impact on Deaf Community: The sole purpose of the Sidekick devices is to greatly increase communication efficiency among the Deaf population. The Deaf population was the Sidekick’s largest and the most loyal market base ever since it was created. The improvement the sidekick brought to the market has pushed the ancient two-ways out of the picture.

How does it work? It functions primarily as a mobile device such as a cell phone. It gives you SMS texting, Internet access, point-and-shoot camera, and a fancy flip screen that kicks around with a 180 degrees motion to reveal the keyboard.


SIPRelay for mobile phones

Screen Shot 2014-12-03 at 11.48.58

When: Invented in 1996 but widely used via Sidekicks in 2002.

Designed by: Henning Schulzrinne and Mark Handley

How does it work? The technology allows you to send a message to the number you are trying to reach, then it will be sent to an operator. Finally, your message will be sent to the hearing person you want to reach.

Impact on Deaf Community: This technology serves as a way of communication. You will be given a number/ user name for the app and then you can use it to contact hearing people. They were closed down in November 2013.

RFC 4168, The Stream Control Transmission Protocol (SCTP) as a Transport for the Session Initiation Protocol (SIP), IETF, The Internet Society (2005)

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