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Method of input of a security code by means of a touch screen for access to a function, an apparatus or a given location, and device for implementing the same

  • US 20040113819A1
  • Filed: 11/26/2003
  • Published: 06/17/2004
  • Est. Priority Date: 11/26/2002
  • Status: Active Grant
First Claim
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1. A method of input of a security code by means of a touch screen of an electronic device for access to a function, a device or a given location, said touch screen comprising control keys, which can be activated by a manual action of a user using a finger or a stylus, each of said keys being made up of at least one sensitive pad linked to a microprocessor unit of the electronic device, wherein the method comprises a series of steps in an entry mode of the security code, which consists of a) placing a finger or stylus on a first key of the touch screen, which represents a first reference of the code to be entered;

  • b) moving the finger or stylus on the touch screen from the first key to a second key of the touch screen, which represents a second reference of the code to be entered, over a specific trajectory, wherein the microprocessor unit registers the sensitive keys or pads activated during the movement of the finger or stylus on the screen to determine the security code.

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