Method and apparatus for remotely detecting presence

  • US 7,599,044 B2
  • Filed: 06/23/2005
  • Issued: 10/06/2009
  • Est. Priority Date: 06/23/2005
  • Status: Active Grant
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First Claim
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1. A method for detecting a presence, comprising:

  • receiving a beam having an angle of reflection;

    in the event the angle of reflection exceeds a minimum angle, electronically determining that an object reflecting the beam is within a detection field; and

    in the event the object is within the detection field, activating a related device.

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