Contact less device e.g. integrated circuit card, identifying method, involves detecting whether more than one unique identification code was transferred if number of positive pulses received exceeds number expected for one code

摘要

The method involves requesting the transfer of a unique identification code (UID), where the UID includes a byte received in the shape of a positive pulse. The positive pulse indicative of the UID is received. A detection is made to find whether more than one UID was transferred if the number of pulses received exceeds the number expected for one UID. A contact less device corresponding to the transferred UID is activated. Independent claims are also included for the following: (A) a contact less device comprising command interpreter and transmitter (B) a program storage device readable by a machine to execute a contact less device identifying method.