Actually I tried to use it just for fun on some vouchers, but it didn't work on ... | Hacker News

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		ale42 28 days ago \| parent \| context \| favorite \| on: New York’s budget bill would require “blocking tec... 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.

krater23 28 days ago [–]

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.

ale42 28 days ago | [–]

Some more tests on this old page: https://murdoch.is/projects/currency/ (2004)

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