4 ms·
you are right a stack of printed qr codes is better
by afiori 2mo ago
you are right a stack of printed qr codes is better
- heftig 2mo agoNo, that's too easily machine-read. Print it in a fancy calligraphy font or one with ambiguous characters.
- newswasboring 2mo agoThat's too convenient, cameras can read many qr codes at a time. Encode the binary on some punch cards.
- eptcyka 2mo agoPretty sure cameras can be used to read punchcards too.
- alex_suzuki 2mo agoThis sounds like a fun project. Somebody already did it, apparently: https://hackaday.com/2012/07/30/reading-punch-cards-with-an-arduino-and-digital-camera/ https://hackaday.com/2012/07/30/reading-punch-cards-with-an-...
- sunaookami 2mo agoReminds me of Lavabit where the US wanted the encryption keys and they printed them out in a 4 point font :D https://en.wikipedia.org/wiki/Lavabit#Legacy https://en.wikipedia.org/wiki/Lavabit#Legacy