New submitter planetzuda writes "Invisible nano QR codes have been proposed as a way to stop forgery of U.S. currency by students of the South Dakota ...
tech.slashdot.org/.../qr-codes-as-anti-forgery-on-currency-coul...
via Google Alerts - qr code
tech.slashdot.org/.../qr-codes-as-anti-forgery-on-currency-coul...
via Google Alerts - qr code
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