Back when I was a kid, my brother and I once photocopied a five dollar bill and successfully fed it into the token machine at the arcade by our house. This was back when photocopiers had just started to become affordable, and it didn’t take long before people caught onto it and made change machines smarter. Now, at least in Britain, huge numbers of counterfeit banknotes are being made with cheap inkjet printers because manufacturers, to keep costs down, are no longer putting special software in their printers that would make it more difficult to copy currency.
