Personal identification device for mobile telephone

Details Personal identification device for mobile telephone Personal identification device for mobile telephone

2005-12-13

2005-12-13

Trinh, Sonny (Department: 2687)

Telecommunications

Radiotelephone system

Security or fraud prevention

C455S411000, C455S556100, C455S569100, C455S410000, C455S559000, C455S558000

Reexamination Certificate

active

06975853

ABSTRACT:
A personal identification device for use with a mobile telephone in a wireless communications network includes an connector mated to a connector of the mobile telephone normally used for a hands-free kit or a data port. In a typical application, a user of the mobile telephone calls a server. The server sends a first telephone signal to the personal identification device. The device responds with a second telephone signal, designed to simulate voice or data activity, depending on the type of connector that is used. The simulated voice activity is structured in such a way as to cause the radio signal transmitted by the mobile telephone to go on and off in response to the simulated voice activity. A nearby receiver can detect the on/off pattern. The on/off pattern is designed to convey a unique identification code.

REFERENCES:
patent: 5487182 (1996-01-01), Hansson
patent: 5649296 (1997-07-01), MacLellan et al.
patent: 5740165 (1998-04-01), Vannucci
patent: 6052576 (2000-04-01), Lambourg
patent: 6072792 (2000-06-01), Mazur et al.
patent: 6130623 (2000-10-01), MacLellan et al.
patent: 6192255 (2001-02-01), Lewis et al.

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