Part III: Slot Machine Cheating · Physical Cheating Methods · #5.17
Piano Wire Clock Jamming
How it works
A sophisticated method of manipulating mechanical slot machines by physically interfering with their internal timing mechanisms. New Jersey gaming exclusion records describe a slot cheat ring that operated at Caesars Boardwalk Regency and Harrah’s Marina in Atlantic City from about April to December 1982; the records do not say what method it used, a team of cheats opened a targeted slot machine and inserted piano wire to jam the internal clock mechanism that controlled reel rotations. The wires were used to jam the clock, stopping or manipulating the timing of the wheel rotations. This allowed the group to control where the reels stopped, effectively determining the outcome of spins.
Where it appears
Mechanical slot machines with internal clock mechanisms controlling reel timing.
On the record
New Jersey gaming exclusion records confirm a 1982 slot cheat ring at Caesars Boardwalk Regency and Harrah’s Marina; members pleaded guilty in 1984. The entire scam was captured on surveillance film.
Detection & preventionADVISORY
The paid halfHow a monitoring room catches piano wire clock jamming, 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.