Dual tone multi frequency personal card

Details Dual tone multi frequency personal card Dual tone multi frequency personal card

H - Electricity

04

M

H04M 1/27 (2006.01) G06K 19/07 (2006.01) H04M 1/2745 (2006.01) H04M 1/275 (2006.01)

Patent

CA 2085775

DUAL TONE MULTI FREQUENCY PERSONAL CARD Abstract This invention relates to a smart card and more particuiar to a smart card that interacts in a communication or processing system through DTMF tones.

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