Part I: Card Game Cheating · CARD MARKING METHODS
Scratch Work
How it works
Scratch work involves using a sharp needle or similar instrument to scratch or etch fine lines into the card back design. Unlike cut-out work which removes larger printed areas, scratch work creates hair-thin lines that follow or extend existing design elements. The scratches may be visible when viewed at the correct angle in the right light. This technique requires exceptional precision and skill.
Where it appears
Poker, private games
On the record
Scratch work is closely related to scroll work and cut-out work but focuses on creating fine lines rather than removing areas of print.
Detection & preventionADVISORY
The paid halfHow a monitoring room catches scratch work, and what stops it recurring, written for the desk, not the reader.
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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.