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INTERACTIVE OPTICAL CARDS AND OTHER HAND-HELD DEVICES WITH INCREASED CONNECTIVITY

  • US 20080037992A1
  • Filed: 10/22/2007
  • Published: 02/14/2008
  • Est. Priority Date: 01/22/1999
  • Status: Active Grant
First Claim
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1. A method comprising:

  • optically receiving on a hand-held device a modulated video signal, the modulated video signal including auxiliary data modulated in the modulated video signal in a substantially invisible way;

    decoding the modulated video signal on the hand-held device to reproduce the auxiliary data; and

    allocating one or more points in accordance with the decoding of the modulated video signal.

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