Personal identification device for mobile telephone
First Claim
1. An apparatus for use with a mobile telephone in a wireless communications network, comprising:
- a connector configured to connect to a mating connector of a mobile telephone; and
a telephone signal processor, coupled to the connector, configured to receive a first message in a first telephone signal received via the mobile telephone, and to produce, in response to the first message, a second message in a second telephone signal for the mobile telephone, and wherein the first and second messages are simulated telephone activity that modulates an envelope of transmitted radio signals responsive to the simulated telephone activity.
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Accused Products
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.
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Citations
13 Claims
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1. An apparatus for use with a mobile telephone in a wireless communications network, comprising:
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a connector configured to connect to a mating connector of a mobile telephone; and
a telephone signal processor, coupled to the connector, configured to receive a first message in a first telephone signal received via the mobile telephone, and to produce, in response to the first message, a second message in a second telephone signal for the mobile telephone, and wherein the first and second messages are simulated telephone activity that modulates an envelope of transmitted radio signals responsive to the simulated telephone activity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification