EMF signature device

Details EMF signature device EMF signature device

2010-09-30

2011-12-20

Lee, Michael G (Department: 2876)

Registers

Records

Conductive

C235S487000

Reexamination Certificate

active

08079529

ABSTRACT:
Systems, methods and devices for making and using EMF signature enabled portable consumer devices are disclosed. EMF signature enabled portable consumer devices, such as credit cards, can include a conductive or semiconductive brittle material layer with an intentionally created random crack or fissure pattern. The intentionally created unique random crack patterns can be created by cost effective and highly scalable standardized processes. When an input signal is applied to the portable consumer device, an EMF signature based on the unique random crack pattern can be induced. The resulting EMF signature can be detected, processed and used as the basis for various encryption, security or authentication protocols.

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patent: WO 02/50790 (2002-06-01), None

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