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Including contextual information with a formed expression

  • US 20070126717A1
  • Filed: 11/20/2006
  • Published: 06/07/2007
  • Est. Priority Date: 03/18/2005
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a writing element having a first portion operable to discharge a first marking substance on a surface in response to a movement of the writing element over the surface and a second portion operable to discharge a second marking substance on the surface in response to a controller; and

    the controller operable to encode information corresponding to a context of the apparatus by regulating the discharge of the second marking substance.

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