Patent ID: 6938019
Filing Date: 2005-08-30
Classification: G06Q

Abstract:
1. A method of performing at least one transaction between a consumer from a plurality of consumers and a merchant from a plurality of merchants, the plurality of consumers and the plurality of merchants utilizing computing devices connected to a network, said method comprising the steps of: providing a token to at least one clearing server during a transaction with a merchant, the token having an indicated value; communicating a request for an update key to said at least one clearing server during the transaction with the merchant; ascertaining, during the transaction with the merchant, an amount paid by the consumer to a previous merchant by polling the previous merchant to obtain the amount, the previous merchant being an entity distinct from the clearing server; verifying the value of the token utilizing the ascertained amount paid by the consumer to the previous merchant; providing said update key, said update key being used as an authorization to modify the value of said token.