Part I: Card Game Cheating · Collusion & Electronic Cheating at Card Games

Scam #14: Back-Spotter System

How it works

A team member stands behind the table without playing, counting cards as an observer. When the count becomes favorable, the back-spotter signals a Big Player to join the table. This variation minimizes the spotter’s financial exposure (since they don’t place bets) and allows one spotter to monitor multiple tables simultaneously. In team configurations, multiple back-spotters may cover a pit, each signaling a central BP who moves between favorable tables.

Where it appears

Blackjack

On the record

The back-spotter system was used extensively by professional blackjack teams in Atlantic City and Las Vegas. Stan “The Man” Wong popularized the technique of entering games only at positive counts, now known as “Wonging” in the advantage play community.

Published as a detection reference for surveillance, compliance and gaming-operations professionals. Thresholds and tuning are set by the property. Nothing here is instruction — the method is described so it can be recognised.