Abstract: A system and method for delivering and securely redeeming localized promotions comprises a consumer interface device such as a smartphone in communication, by a software application and network connection, with a server and database. Each participating vendor is assigned a unique identifier and a device capable of generating and displaying a changing, one-time identification code including the identifier and a timestamp. Once a consumer finds a promotion of interest and visits the offering vendor, the promotion is redeemed at the point of sale via the application activating the consumer's smartphone camera and scanning the code. The application then tags the code with certain metadata, which is transmitted to the server for authentication and archiving. Each promotion redemption thus has a unique code, and analytical consumer data compiled will be highly accurate, unlike strictly GPS-based redemption. The system and method include an element to reward use and encourage promotion sharing.