Patent ID: 7246752
Filing Date: 2007-07-24
Classification: G06K,G06Q,G07F

Abstract:
1. A user access card, comprising: a magnetic stripe for supporting permanently recorded magnetic data bits along data tracks on a exposed surface of a card that can be read by a card reader access device; a plurality of magnetic-transducer write heads particularly located under at least one of a plurality of recording data bit positions disposed along said data tracks in the magnetic stripe; a data generator connected to the plurality of magnetic-transducer write heads and providing for autonomous dynamic control of magnetic data bit values associated with individual particular ones of said plurality of recording data bit positions; a detector disposed in the magnetic stripe and providing for an automatic trigger to the data generator to produce new data bit values and for the plurality of magnetic-transducer write heads to record such as magnetic recording data bits; wherein, a complete user access number can be recorded in parallel as a mixture of permanent and dynamic magnetic recording data bits that are readable in serial by said card reader access device.