Patent ID: 8612357

Claim:
A wearable identification token, comprising: a housing; a transmitter programmed to transmit user identification data to a proximity reader, the transmitter located in or on the housing; a sensor programmed to detect removal of the housing from the user's body, the sensor located in or on the housing; and a switch programmed to switch the identification token between an enabled state in which the identification token is operable to transmit user identification data to the proximity reader and a disabled state in which the identification token cannot transmit the user identification data, the switch located in or on the housing, and further programmed to be responsive to the sensor to switch the identification token from the enabled state to the disabled state in response to the housing being removed from the user's body, and further programmed to be responsive to a signal received from a trusted electronic device external to the identification token to switch the identification token from the disabled state to the enabled state at a time when the housing is not on the user's body.