SECURITY PROCEDURE FOR CONTROLLING THE TRANSFER OF VALUE UNITS IN A CHIP CARD GAMING SYSTEM

摘要

The invention concerns slot machines, such as jackpot or black jack and other casino gambling machines. The machines are designed to operate with gaming cards (CJ1), such as chip cards, and are connected by network to a central management unit (1). The invention is characterised in that the central management unit comprises a database (BD), wherein are stored data corresponding to those stored on the gaming cards such data concerning the gamester and card identification data (Id) and data (S, Op1, Op2) concerning the account balance stored in the card (CJ1). The procedure consists in verifying the card data with respect to the central management unit database to ensure the integrity of such a gambling machine system operating with chip cards or contactless cards.