Patent ID: 7269844
Filing Date: 2007-09-11
Classification: G06F,G06K,H04L,H05K

Abstract:
1. A method of securing a token having a USB-compliant interface from unauthorized use, comprising the steps of: accepting the token in an input device having a token interface, the input device being communicatable with a host processing device and being different from a keyboard associated with the host processing device; accepting a user-entered personal identifier in the input device; transmitting the user-entered personal identifier to the token via a communication path distinct from the USB-compliant interface by generating a first signal having information including the user-entered personal identifier, and emitting the generated signal in the token interface for reception by a token sensor; and physically shielding the signal in a manner, with respect to the wavelength of the signal, to prevent emissions that are of a magnitude sufficient to permit their reception by sensors which are not physically proximate the emitter and to confine reception of the signal to the sensor.