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Pressure password input device and method

  • US 6,509,847 B1
  • Filed: 09/01/1999
  • Issued: 01/21/2003
  • Est. Priority Date: 09/01/1999
  • Status: Expired due to Term
First Claim
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1. A method for inputting a code by temporally varying the amount of pressure applied to a touch interface wherein the code may be used to enable a function, the method comprising the steps ofsensing temporal variations in pressure applied to the touch interface;

  • encoding the sensed temporal variations in pressure to generate a single code based on the sensed pressure over the temporal period; and

    comparing the generated code with a stored code template to determine if the generated code and the code template match within a predetermined tolerance.

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