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Location based authentication system

  • US 8,285,639 B2
  • Filed: 07/05/2006
  • Issued: 10/09/2012
  • Est. Priority Date: 07/05/2005
  • Status: Expired due to Fees
First Claim
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1. A method for accurately and adaptively learning the locations of merchants, comprising:

  • identifying, by an authentication server, pairs of payment transactions which occurred within a predefined time interval and are submitted by different merchants, wherein payment transactions are recorded by a transaction server and the identification occurs as payment transactions are received at the authentication server;

    setting, by an authentication server, a maximum allowable velocity and a maximum merchant location score (MLSmax) to their respective initial value;

    for each pair of payment transactions, computing, by an authentication server, a transaction velocity;

    computing a merchant location score (MLS) for each merchant that submitted a payment transaction in the each pair of payment transactions, if said transaction velocity is lower than a maximum allowable velocity;

    setting a location of a merchant of each of the merchants to a location of an anchor location, if said MLS computed for the merchant is above a maximum value of MLS;

    saving the computed MLS of a merchant if its computed MLS is below the maximum value of MLS; and

    saving, by the authentication server, the location of the merchant in a database, thereby the authentication server adaptively updates the database with the locations of merchants in a specific area as payment transactions are received from the transaction server.

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