Part I: Card Game Cheating · CARD MARKING METHODS

Video-Luminous Marking

How it works

Video-luminous cards use marks that cannot be seen by the human eye even through luminous filters. The marks can only be read by custom-designed electronic devices with special filters, with the information displayed on a TV monitor in another room to a confederate partner. The marks are typically applied to card edges or backs using specialized chemicals. The partner then signals or transmits card values to the player who needs to know. This system is nearly undetectable during gameplay since the marks are invisible to all human observers.

Where it appears

Poker tournaments, high-stakes games, games with private viewing areas

On the record

Video-luminous systems represent the highest tier of card marking technology. These systems are sometimes used by private game operators to detect collusion after the fact by recording marked card images.

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.