Field guide

Magnetic Ball / Wheel Interference

How it works

Using magnets to influence roulette ball or dice outcomes. Requires either a magnetic ball or concealed electromagnets under the table/wheel. Cheaters substitute a ball containing a small steel core or magnet. Accomplices activate electromagnets under the wheelhead or table to influence the ball’s landing zone. Alternatively, magnetic dice work with table-mounted electromagnets.

On the record

Magnetic interference has been attempted sporadically. Modern casino-grade equipment makes this largely obsolete but determined cheats still experiment with the technique.

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.