Abstract: Described are a number of mechanisms that can reduce transaction costs and increase the economic viability of a number of products. Included is a combination instant lottery ticket and debit card that makes it possible to issue prepaid debit cards having a relatively low monetary value. Also included is a combination on-line ticket/receipt and debit card that can automate the prize paying process, simplifying the retailer's responsibilities while reducing the potential for fraud. Various cash flow and authentication techniques such as age and location verification, nano payment methods and spam filters based on these mechanisms are also described. In addition, instant lottery tickets, and in particular, losing tickets can be provided with a small residual value by placing account information on the ticket. In another version, a lottery ticket can be combined with a payment card that operates as a closed payment system whereby the payment card can only be used with a specified vendor.