METHODS AND SYSTEMS OF ELECTRONIC MESSAGING

摘要

Methods and systems of electronic messaging for verification and / or authentication purposes using a point of sale terminal and a card transaction processing network involve, for example, receiving data consisting at least in part of a consumer's identifier that is processable through a transaction card processing network and a nominal monetary amount which is an indicator that the data relates at least in part to a coupon redemption for a consumer. Other aspects include, for example, using different nominal amounts to distinguish between multiple promotions and processing overcharges. Additional aspects involve, for example, receiving data consisting at least in part of an identifier for a registrant that is processable through a transaction card processing network and a nominal monetary amount which serves at least in part to identify a command message on behalf of the registrant.