Part I: Card Game Cheating · CARD MARKING METHODS

Juice Dust

How it works

An advanced type of daub, juice dust is a powdered form of marking substance that can be applied to cards during play without dulling the card’s finish. Unlike traditional daub, juice dust works on both paper and 100% plastic playing cards. The cheater typically has the powder hidden on their person (in a pocket, ring, or other concealment) and applies it by touching card backs. The powder adheres to the card surface and creates a mark readable through special filtered lenses or by the trained naked eye.

Where it appears

All card games, especially those using plastic cards

On the record

Juice dust represents the evolution of daub technology, specifically developed to work on modern plastic casino cards that traditional daubs cannot effectively mark.

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.