Didn't he also end up getting banned for life from that casino for counting cards?
> His research proved successful, netting him twenty thousand dollars, which he donated to the Free Software Foundation, an organization of like-minded believers in the Hacker Ethic. “Its [sic] not like I’m trying to make a living at [blackjack],” Carmack wrote online after his trip, “so the chance of getting kicked out doesn’t bother me too much.” It didn’t take long for him to find out just how he’d feel. On the next trip, Carmack was approached by three men in dark suits who said, “We’d appreciate if you’d play any other game than blackjack.”
> The others at the table watched in disbelief. “Why are they doing this to you?” a woman asked.
> “They think that I’m counting cards,” Carmack said.
> “They think you can remember all those different cards?”
> “Yeah,” Carmack replied, “something like that.”
> “Well, what do you do?”
> “I’m a computer programmer,” he said, as he was escorted out the door.
You usually have a few smaller players just playing fixed bets who call over some higher roller that will do the big betting when the count is high, and then just leave when the count gets low.
Rumor has it that the security cameras now have software that will tally the count automatically, and flag people that play when the count is up. Coupled with player identification (facial recognition/player rewards cards) and correlating player times, casinos are starting to automate this. All rumor, of course, but sounds plausible if you're willing to throw a few million at the problem.
Back in 2005 I was approached by one of the casino groups that was looking for a director of technology to manage the team that did "camera analytics". Seemed like a pretty neat job technically.
So I looked up the privacy policy of Holland Casinos and there is no mention of facial recognition, only mention of CCTV for security purposes (under which I wouldn't expect prevention of adverse losses to fall) and a seven day storage period of camera footage. They are not explicit but suggest they do not use camera data for profiling purposes.
If I remember correctly, then that is true in Nevada, but not in Atlantic City. There they have to let you play even if they suspect you of counting cards.
Of course that just means they will employ other means to prevent you from counting cards (larger shoes, continuous shuffling, etc).
I've always assumed that the two are really the same thing. If you get good at the game then that implies you're using an intuition for the probabilities of certain events based on the history of the cards.
I suppose the casinos don't have to justify this, or have any moral quandaries about it.