The thing that makes me skeptical about this copier story is this: the money could have any orientation and position on the page. It would take a large amount of computing power to look at an image and deteri\\ determine whether there is a certain bitmap anywhere on it. Look at how poorly optical-character-reader technology does now, and that is when it knows how the letters are oriented. Adding random orientations would make the problem far worse. And, will it look at the whole dollar bill, or just pieces of it? It has to respond to all the different denominations, too. Plus, if it makes a mistake and permanently locks up the customer's machine, the manufacturer is going to have a big problem. In short, I'm pretty sure that there is a lot of disinformation going around designed to scare people away from trying it. However, there is another possibility, which is to look at hte color of the bills. This does not take so much processing power, although bills may vary somewhat in color. Years ago, I'd read that these machines would not accurately reproduce the color of money. Perhaps today they will turn that color to black. Hal