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System and method for securing a personalized indicium assigned to a mobile communications device

  • US 7,961,883 B2
  • Filed: 11/24/2004
  • Issued: 06/14/2011
  • Est. Priority Date: 11/24/2004
  • Status: Expired due to Fees
First Claim
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1. A method for securing a Personal Information Number (PIN) that is mapped to at least one identifier associated with a mobile communications device, the method comprising:

  • detecting, at a network node that comprises a data structure mapping said PIN to an address associated with said mobile communications device, that said address has changed;

    responsive to said detecting, issuing a challenge message to said mobile communications device by said network node, wherein a challenge response is operable to be generated by said mobile communications device using an authentication key; and

    based on said challenge response from said mobile communications device, determining at said network node whether said PIN is legitimately bound to said mobile communications device.

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