“I think most people feel that if you can find a way to beat the casino, more power to you,” says Arnold Synder, his eyes, those telltale features, hidden behind a pair of black sunglasses. “This place set up the rules, they provide the equipment, they provide the dealer, and they're basically saying, ‘Come in and try to beat us.’”

It's the welcoming whisper, the allure of easy fortune. Folks come in and wager, hoping they'll be the exception to the rule that the house always wins. Then there are the savvier players, those who don’t simply hope, but actively seek an advantage — sometimes by any means necessary. Probably for as long as there have been wagering games, players have sought an edge. Depending on the orientation of your moral compass, sometimes that search tips over into outright cheating. And for as long as there have been cheats, the house has tried to stop them. Today, when every smartphone is a computer, camera, and communications device, the potential for cheating is probably greater than it's ever been. But the casinos are fighting back with technology of their own.