Part V: Regional & Cultural · Casino Slang & Historical Terms
Clock (Surveillance)
Slang — Surveillance/SecurityREPORTED
In casino surveillance slang, to “clock” a player is to watch him closely and continuously. A supervisor’s instruction to “clock him” asks a surveillance observer to follow a suspected advantage player and record his play.
In practice
Listed in D. V. Cellini’s glossary of casino surveillance terms (The Card Counter’s Guide to Casino Surveillance, 2003). Not the same as wheel clocking, where a player times a roulette wheel.
Related terms
One entry from the Casino Industry Glossary, 1,090 terms written for surveillance, compliance and operations professionals rather than for players. Definitions describe industry usage; where a term carries a regulatory meaning, verify against the instrument that governs your jurisdiction.