When a fish hunter machine is losing money, the natural instinct is to check the hardware. You look at the board, test the coin mech, review the payout settings. These checks take time and often show nothing wrong. The machine appears to be functioning perfectly. And yet, the revenue keeps dropping. I have walked into venues where the operator had spent three weeks swapping boards and power supplies on a fish hunter machine, only to find that the real problem was a signal injector sitting in a player’s pocket.
There is a faster way to diagnose the problem. With the right method, you can confirm whether your fish hunter is being cheated within 30 seconds. No tools required beyond what you already have at your venue.
The 30-Second Cash Gap Test
Here is the test. Walk to the suspected machine. Open the cash box and count the coins or bills inside. Then check the machine’s electronic credit meter — the total credits recorded by the machine since the last reset. If the electronic meter shows significantly more credits than the cash box contains, you have confirmed a cheating incident. The gap represents credits that the machine believes it received but that no player paid for. Those credits were generated by an external device.
A gap of 3% or less could be normal variance — some players use bills that the box does not register correctly, or the machine settings include a small percentage of free credits as a promotional feature. A gap above 5% is nearly always cheating. A gap above 10% is definitive proof of signal injection or a coin pulse device. I have seen venues with gaps as high as 27% on machines that the operator swore were working fine.
What to Do After You Confirm the Gap
Once you have confirmed the gap, do not accuse anyone. Instead, install the Gen2 anti-cheat device on the affected machine. The device will block the attack and start logging blocked attempts. After installation, run the same cash gap test daily. If the gap closes within three days, the cheating is stopped. If the gap remains, the issue may be hardware-related or involve a method the device does not cover, such as a direct board manipulation.
I use this method every time I walk into a new venue. In my last 12 venue visits, the cash gap test identified cheating on the first machine I checked in 10 of the 12 venues. The other two venues had legitimate business issues — declining foot traffic and a broken coin mech — but the test quickly ruled out cheating and saved the operator from wasting time chasing the wrong problem.
When the Gap Test Is Not Enough
Some cheating methods do not create a cash gap. Trojan code access, for example, can adjust the payout percentage without creating fake credits. In that case, the cash box and credit meter match perfectly, but the machine pays out more per credit than it should. For this scenario, use the payout percentage test. Calculate the machine’s payout percentage over the last 30 days. If it exceeds the programmed rate by more than 3%, trojan access is likely even if the cash gap test passes.
The two tests together — the cash gap test and the payout percentage test — cover the vast majority of cheating methods used on fish hunter machines today. Each takes under a minute. Together, they give you a complete picture of whether your machine is being cheated.
What Operators Find After Applying the Test
In a venue in Texas, the operator had been losing money on a single fish hunter machine for six months. He had replaced the board twice and recalibrated the coin mech three times. I showed him the cash gap test. The gap was 14%. He installed a Gen2 device on the machine. The gap closed to 2% within 48 hours. The entire diagnosis and fix took less time than his previous single board swap. The machine had been cheated from the day it was installed, and no amount of hardware replacement would have fixed a signal injection attack.
If your fish hunter machine is showing signs of a cash gap exceeding 5% or payout percentage above the programmed rate, 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 — send me your machine model and I will tell you what is going on.
Frequently Asked Questions
Q: What if the machine has a bill acceptor as well as a coin mech?
A: The test works the same way. Compare total credits registered against total cash — including bills. Bills produce a different type of pulse, but the principle is identical.
Q: How often should I run the cash gap test?
A: Daily for the first week after installing protection, then weekly. Consistent gaps of 0-2% are normal. Any gap above 5% needs investigation.
Q: Will the anti-cheat device help me identify which player is cheating?
A: The device logs blocked attack attempts by time. If you cross-reference the log times with player activity — who was at the machine, when — you can identify the suspect.
Q: Can I run the cash gap test on machines that use a ticket-in/ticket-out system?
A: Yes. Compare the ticket dispenser’s issued-value total against the cash loaded into the machine. The principle is the same: if the machine issued more value than was loaded, there is a gap.