Comment by ale42
17 hours ago
Actually I tried to use it just for fun on some vouchers, but it didn't work on the copy machines I tried. They just happily photocopied the vouchers.
17 hours ago
Actually I tried to use it just for fun on some vouchers, but it didn't work on the copy machines I tried. They just happily photocopied the vouchers.
Tried the same, doesn't do anything on my scanner. Interestingly, there are regions of banknotes my scanner refuses to scan. But had no time to investigate further.
Some more tests on this old page: https://murdoch.is/projects/currency/ (2004)