Abstract: The present invention discloses a behavior monitoring system and method for tracking users' consumer behavior in real-time. Each participant of the system is equipped with a mobile device capable of decoding barcodes. Every time a participant makes a purchase, they scan the barcode located on the product and answer preliminary questions about the product. This information is then sent to a server via a wireless network and stored in a user database. The participant is then prompted with a series of more specific questions once the scanned barcode has been identified using a product database. The answers to the additional questions are also stored in the user database.