How To Make A Slot Machine Bill Validator Device

Slot Machine Bill Acceptor Cheats. Today’s slot machines take dollar bills. And while modern machines use all kinds of laser technology to verify the authenticity of the bills being inserted, machines of yesteryear weren’t nearly as advanced. So back in the day, someone created a tiny device that is inserted into the bill feeder. Today with electronically controlled machines there are a number of unique methods for trying to make a slot machine payout. Some of these devices/emp jammer delivered an electric shock to the slot machine, others are more elegant electronic devices that override the programming or disrupt the electronic circuitry of the slot machine.

• How To Make A Slot Machine Bill Validator Device Invalid
• How To Make A Slot Machine Bill Validator Devices

1. Top part would be inserted through the coin chute while the bottom would be inserted into the coin slot. This would jam the machine and propel the machine to eject the coins it had collected. The bill validator device. This was one of the most effective slot cheats. It involved a device that would trick the slot machine into taking a $1 bill.
2. The optical properties of a bill, or a strip of a bill, can be sensed with a photocell or a camera and compared to valid patterns stored in memory. Different patterns from different bills can determine the denomination. A good bill changer will use several of these techniques because people seem to have a very strong desire to outwit bill changers.
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Creating a good bill changer is a tough problem. The device has to work with all sorts of bills, from crisp new ones to ragged old ones, and it has to be reasonably good at telling real bills from fakes. In many cases, the changer also has to be able to sense the denomination of the bill. In order to accomplish these tasks, dollar bill changers use a variety of technologies. Several different patents listed below discuss techniques that people have employed. Some of these techniques have changed over the years as microprocessors have allowed more capability in the device.

Here are several of the techniques that have been tried:

• Many of the early bill changers took advantage of the fact that U.S. bills are printed with magnetic ink. They could therefore use magnetic heads (like the ones in a cassette tape recorder) to pick up signals from the bills. Areas of the bill (like the background behind the president's face) would generate signals at a specific frequency, and the detection of this frequency would validate the bill. Different bills generate different frequencies, so the frequency can also help determine what the denomination is.

  The backgrounds from behind the president's face on a $1, $5 and $10 bill: Note the different spacing used in each one. The spacing can help determine the denomination.

• Genuine dollar bills have a certain conductivity, and checking for the resistance of a bill can authenticate it.
• Inks and papers have different fluorescent properties, and these properties can help tell real from counterfeit bills.
• The optical properties of a bill, or a strip of a bill, can be sensed with a photocell or a camera and compared to valid patterns stored in memory. Different patterns from different bills can determine the denomination.

A good bill changer will use several of these techniques because people seem to have a very strong desire to outwit bill changers. If you read the patents listed below, you will find that they handle such things as people inserting just half of the bill, people inserting bills with strings attached so they can jerk them back out, people who try unplugging the machine with the bill half-inserted...

These links will help you learn more:

• Patent #3,870,629: Paper Currency Validator

How To Make A Slot Machine Bill Validator Device Invalid

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How To Make A Slot Machine Bill Validator Devices

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