Marybeth passes on a link to a New Scientist article that indicates some casinos are planning to add RFID tags to their gaming chips in 2004. It seems like an effective way to combat fraud, but I’m not sure it’d do much good for rating players—chips change hands often, and you’d still need to tie the physical location of the player to the chips for it to be useful. I suppose you could do this by implanting an RFID tag in the player’s club card (and figuring out a way to measure proximity of chips to that card), or by having players insert their card into a reader at their seat at the table—which would work at blackjack, 3-card poker, or baccarat, but be problematic for craps or roulette where players normally stand.