A technique for tracking advertisement efficacy using consumer transactions is disclosed. An information tracking agent maintains and stores information related to users identified by a unique identifier. A user is presented with an online/offline advertisement. An information tracking agent records and stores the advertisement transaction. When a user performs a transaction for purchase of goods or service that are the subject of the advertisement, the information tracking agent identifies the user with the unique identifier and the matching agent matches the user transaction with the displayed advertisement. The system automatically tracks the effectiveness of the advertisements displayed to users without requiring consumer action, beyond the purchase/transaction, in response to the displayed advertisement. In another embodiment, the system automatically tracks user location with a GPS and dynamically displays advertisements on billboards connected to the information tracking agent.
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