I tried not to act surprised, but there it was happening smack dab in front of me: two cheaters at a blackjack table. Every few hands, when a pit supervisor was out of range, one would distract the dealer so that his accomplice could “cap” or “pinch” a bet.

Most of the stuff described in the article is typically done in-house with technology rather than through third-party wetware and it's already going on all the time, but the basic techniques are interesting if you aren't familiar with 'em ...