Casinos in Nevada were warned by gambling regulators to keep an eye out for a card-counting program that runs on the iPhone and iPod Touch that illegally helps players beat the house in blackjack.

Nevada gaming authorities have warned casinos to watch for blackjack players using an iPhone application to count cards. In a memorandum that the state’s gaming control board circulated to casinos ...

Card counting is one way players might train to find an edge in the casino. With enough studying and preparation, players can take advantage of a significant change in the odds of winning. Card ...