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Authentication method and system

  • US 9,424,567 B2
  • Filed: 04/23/2013
  • Issued: 08/23/2016
  • Est. Priority Date: 08/21/2001
  • Status: Expired due to Term
First Claim
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1. A mediator authorizing a transaction involving a user having a mobile device, the mediator comprising:

  • a processor that accesses the mobile device'"'"'s address in response to a request by an entity to authorize a transaction involving the user, causes a communication to be sent to the mobile device address from a first reply address, and determines if a communication response to the first reply address authorizes the transaction,wherein the processor sends a further communication to the entity indicating if the transaction is authorized; and

    wherein determination if the communication response to the first reply address authorizes the transaction includes verifying correspondence of both the mobile device'"'"'s address and the first reply address of the communication response with the mobile device'"'"'s address and the first reply address of the sent communication.

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