A system for correlating a consumer's purchasing behavior to his/her exposure to advertisements. The advertisements are disseminated to consumers via the Internet, radio, television and direct mail. Monitoring data of the consumer's exposure to such advertisements are obtained. A scanner is used to allow the consumer to create electronic images of purchase records, such as receipts, obtained from the purchase of goods and services. The purchase receipts contain alpha-numeric characters which is recognized by an optical character reader application associated with the scanner. The optical character reader application identifies the purchased goods and services from the receipts. Once identified, the purchased goods and services can be correlated with the monitoring data.