US 5,128,752 · Granted 1992-07-07

System and method for generating and redeeming tokens

Tokens and coupons are generated in a television viewer's home by the viewer entering selected product information and authentication data transmitted to and displayed on the television into a home generating unit. The tokens and coupons can be presented to stores or redemption facilities for prizes and discounts on selected products. The matrix used to record the product information and verification data may also be provided with a code for use in giving additional prizes to purchasers whose code matches a predetermined code. The generating unit may also comprise a memory for storing information regarding the coupons generated by the unit for later review by marketing and manufacturing companies.

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