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Information encoded in an expression

  • US 20080088606A1
  • Filed: 11/20/2006
  • Published: 04/17/2008
  • Est. Priority Date: 03/18/2005
  • Status: Active Grant
First Claim
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1. A device comprising:

  • a writing element operable to form a mark on a surface corresponding to a movement of the writing element over the surface; and

    a controller operable to digitally encode information in the mark.

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