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Method for controlling access to a determined space via a personalised portable object, and portable object for implementing the same

  • US 20040005868A1
  • Filed: 07/02/2003
  • Published: 01/08/2004
  • Est. Priority Date: 07/05/2002
  • Status: Abandoned Application
First Claim
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1. A method for controlling access via a personalised portable object to a determined space via wireless transmission of an encoded identification signal, electronic means, which include access control means connected to signal reception means and/or transmission means, provided in the space, and the portable object including a processing unit connected to signal transmission means and/or reception means, the method including steps of:

  • transmitting an encoded identification signal via the transmission means of the portable object or respectively via the transmission means provided in the determined space, receiving the encoded identification signal via the reception means provided in the space or respectively via the reception means of the portable object, when the object is in a restricted zone around electronic means provided in the space, and verifying the encoded signal in the access control means or respectively in the processing unit for authorising access to the space, wherein the transmitted and received encoded identification signal includes an analogue signature defined by at least one amplitude variation of the encoded signal envelope, said analogue signature being specific either to the electronic means provided in the space, or to the portable object, or to the pair formed by the personalised portable object and the electronic means provided in the space so as to authorise access to the space if said signature is recognised.

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