Casinos have the right to deny service to anyone, and of makes sense to deny players from playing a game in which they have an advantage versus the house.
So perhaps, one casino considers that counting cards are illegal, and they will ban the player from using that method. But in the other casino, counting cards is not illegal, and the player can use it as long as the player is doing without any technology. Well, that will depend on where you play the game
It's enough stupid, i think anyone here understand. As i said before, "counting" doesn't affect probability of game result. For example, we are playing Hold'em, and i have two Jacks on my hand. So, i'm counting the probability to get
at least one more Jack for set. This will be 2/50 (i don't count cards at my hand, and poker deck has 52 cards). Will it affect a chance to get one more Jack? Obvious - no.
So where is cheating?
this is how group card counting works:
1. the spotter plays the minimum and is the lead card counter
2. he signals the big bettor when the deck is hot (ie more likely to produce face cards and aces = better odds)
3. the big bettor raises the stakes
instead of prohibiting this type of action, casinos use a practice called "preferential shuffling". when stakes are raised mid-game, the decks are shuffled. this removes any card counting advantage but allows players to raise the stakes, yielding more profits for the casino.
Heh, really interesting
But you're talking about some pure cheating, if i correctly understand what you're talking about. With ordinary probability theory you can't be sure what cards will be after, only the chance to get it. Also, you should know all hands of all players at the table (if we are talking about poker)