Monday, June 9, 2008

Counterfeiting


We all know what dollar bill looks like, but how many of us have really examined one carefully? Trythe following activity to investigate how fake bills, called counterfeit bills, are detected.

Materials

- picture of counterfeit bill
- $1 bill
- pencil
- paper

Procedure

1. There are at least twelve things wrong with the $1 bill on the sample. Examine the picture and see how many errors you can find. Write down your answers.
2. After you have found as many errors as you can, compare the picture to the real $1 bill. Write down any additional errors you notice.
3. Compare your answers with the list on the next page. Did you find the more errors listed?

Explanation

To counterfeit means to make a copy of something with the intent to trick or deceive. It used to be very difficult to counterfeit paper muney. The counterfeiter had to make special plates, or replicas, of each side of the bill being counterfeited. There were many places where mistakes could be made. The wrong hair on the president or an error in the serial number could ruin moth of work.

With the rise of color copiers, however, counterfeiting money is now easier. New high-speed, high-quality laser copiers are a quick and simple way to duplicate money. To combat counterfeiting on this new generation of copiers, the U.S government is now printing money on special paper that can’t be purchased by anyone but the government. Counterfeit money will not only look different, but feel different, too. The Canadian government has begun using a high-tech solution to stop counterfeiting. They’ve started placing holograms on their money, similar to the ones on credit cards.

There are many document besides paper money that can be counterfeited. With the aid of copiers, payroll and other checks are commonly forged. But even nonpare items, such as credit cards, can be copied. As with money, holograms have been added to credit cards to make them harder to forged. And special dyes that can only be seen under ultraviolet light are used to add pictures and words to the front of the credit card.

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