Incentive based purchasing system where the percent chance of winning depends on transaction totals and maximum probability

摘要

The system is directed towards an incentive based purchasing system, where customers purchase items from a merchant at one or more terminals. The system firstly has a transaction database that stores one or more transaction records. The records include customer identifiers, merchant identifiers and a transaction total. There is also a retrieval component that retrieves the purchase history and where the transaction totals for the customer are summed up. Given a maximum probability of winning, a prize calculator then calculates the probability of the customer winning a prize based on the said maximum probability and the purchase history of the customer.