Coin Changer Fraud is carried out by a lot of swindlers. Here is how they do it:
1) Find the type of change machine that you slide in your bill length wise not the type where you put the bill in a tray and then slide the tray in!!
2) After finding the right machine, get a $1 or $5 bill. Start crumpling it up into a ball. Then smooth out the bill, now it should have a very wrinkled surface.
3) Now the hard part. You must tear a notch in the bill on the left side ab out 1/2 inch below the little 1 dollar symbol (See Figure).
4) If you have done all of this right then take the bill and go out the machine. Put the bill in the machine and wait. What should happen is: When you put your bill in the malhine it thinks everything is fine. When it gets to the part of the bill with the notch cut out, the machine will it and (if you have done it right) give you the change at the same time!!! You end up getting your bill back, plus the change!! It might take a little practice, but once you get the hang of it, you can get a lot of money.
P.S. Sorry for the “text work” for Coin Changer Fraud diagram but you should be able to get a good idea.