Being rated while playing blackjack is analogous to using a slot club card. In both cases, players receive various forms of casino complimentaries for playing. Slot clubs frequently pay cash back to the players, so most players use them. In blackjack, players use a variety of names. For similar reasons, video poker players frequently remove their slot club card so jackpots not registered.
Surveillance is more automated in video poker.
The machine itself accurately registers the amount of the bet, whether or not a payoff is earned, and the amount of the payoff. In blackjack, most of the game monitoring is done manually. Dealers determine who wins a hand, and the amount of the payoff. The literature on blackjack is vast, and much is very accurate. These authors, generally speaking, admire each other and agree with each other s conclusions.