After receiving phone calls from many businesses that discovered their machines were being cheated or robbed by electronic devices, some to the tune of $20,000.00 and more, we purchased products from several websites that sell cheating devices .  Use Google and you will find websites that sell the types of cheating devices that our product detects.   After some research and testing, we developed a detector that quickly signals and locates devices that JACKPOT Gambling machines, Slot machines, ATM machines, Vending machines, Soda machines, Bill Changer machines, Bill Validators, Bill Acceptors, Cherry Master, Pot O Gold, 8 Liner machines, Fruit machines, Video Poker machines, Keno machines, and machines with built-in Credit Card and Magnetic Stripe readers.  Electronic cheating device signals can be detected up to 10  feet away.  By watching the 10-segment display, you can quickly zero in on the location of the device. Uses a standard 9 volt battery.