Coin shaving and fake token insertion are among the oldest and most persistent forms of coin pusher cheating. The methods are simple, the materials are easy to obtain, and many machines still on arcade floors have coin mechs that are vulnerable to these attacks. I have seen coin shaving practiced in venues across the UK, Europe, and the United States, and it continues to cost operators real inventory losses despite being a low-tech method.
Coin shaving works because the machine’s coin mech has a tolerance window for token size and weight. A token that is slightly smaller or lighter than the standard token will still be accepted if it falls within the tolerance range. Cheaters exploit this by filing down legitimate tokens or by creating custom tokens that are just small enough to pass the acceptance test while being cheaper to produce than the real tokens.
How Coin Shaving Works
The cheater takes a legitimate token and files down the edges, removing 0.5-1mm of material from the circumference. The reduced token is still accepted by the coin mech because the width and weight are within tolerance. However, the reduced size means the token is less likely to stack properly on the playfield — it may slide through gaps that normal tokens cannot, or it may trigger the payout sensor prematurely. The cheater can file down dozens of tokens and use them over multiple sessions, effectively getting free plays from shaved tokens that the machine accepts as valid.
How Fake Tokens Are Used
Fake tokens are typically made from stamped metal discs that match the dimensions and approximate weight of the machine’s legitimate tokens. They are sold online in bulk for pennies per token. When inserted into the coin mech, they pass the physical acceptance test (size and weight) and the machine registers a credit. The fake token then enters the playfield and circulates with legitimate tokens, diluting the value of the real inventory.
Some operators have told me they assumed the increasing number of damaged or discolored tokens in their machines was caused by normal wear. In fact, those tokens were frequently factory-made fakes that had been circulating through the machine for weeks.
How to Block Coin Shaving and Fake Tokens
The most effective countermeasure is upgrading the coin mech’s acceptance validation. Standard coin mechs test for size and weight only. The Gen2 anti-cheat system adds an electromagnetic signature test — every token that passes through the mech is analyzed for its electrical and magnetic properties. Real tokens have a consistent signature. Shaved tokens and fakes have a different signature because their material composition or geometry has been altered. The device flags and rejects any token that does not match the expected signature.
Additionally, the Gen2 system monitors the payout tray sensor for shaved-token exploits. When a shaved token slips through the playfield prematurely and triggers the payout sensor, the device flags the event as anomalous and alerts the operator.
If your coin pusher or token pusher machine is showing signs of coin shaving or fake token insertion, send me a message with your machine model and a photo of your setup. I will do a quick remote check for free. Every device comes with a money-back guarantee, official invoice, express shipping, and 1-on-1 technical support.
WhatsApp / WeChat / Phone: +86 158 1582 1587 — Engineer Wang
To discuss the best anti-cheat strategy for your specific arcade setup, message me directly. I offer a free remote diagnostic session.
Frequently Asked Questions
Q: How can I tell if my machine is being targeted with coin shaving?
A: Inspect your token inventory regularly. If you find tokens with filed edges, unusual coloration, or inconsistent weight compared to your standard tokens, coin shaving or fake tokens are being used.
Q: Will upgrading the coin mech solve the problem permanently?
A: Upgrading to a higher-precision coin mech helps but is not foolproof. Adding the electromagnetic signature test through the Gen2 system provides a second validation layer that mechanical upgrades cannot match.
Q: Can I recover the cost of fake tokens from the cheater?
A: Recovering costs from individual cheaters is usually impractical. The anti-cheat device prevents future losses and pays for itself within weeks by stopping the inflow of fake tokens.
Q: Do I need to replace all my tokens after detecting fake coins in the system?
A: Yes. Remove all tokens from the machine and replace them with verified tokens. The Gen2 device will then reject any fake token that is inserted in the future.