It would take some sophisticated and expensive programming to create a card that would affect the randomness and payback percentages without breaking the law. This seems to be a case of selective memory. Casinos won t pay off on a machine that wasn t supposed to hit a jackpot. I recall one case years ago where a player rigged a garage-door opener to send a signal to a slot machine. You can t beat the slot machines in the long run.
Most people can t.
You can t beat video poker machines. They combine their slot club points with the paybacks of certain machines and in the long run, come out ahead. If you play video poker occasionally, perfect strategy is your best approach, so you should try to master it. However, your results won t mimic those of the experts. You can t learn how to beat the slots by reading books.