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Re:Show HN: A Hand-Drawn QR Code Alternative by jen729w on Monday July 27, 2015 @06:48PM (#9958503)
Like the one we've used on bank cheques* for all of time

MICR E13-B: http://www.micr-fonts.com/MICRfont/micrfont.html

(*British. <grin>)

Re:Show HN: A Hand-Drawn QR Code Alternative by DannoHung on Tuesday July 28, 2015 @12:01AM (#9959443)
I meant one that could be created by hand, but that works for ones made by printer.
Re:Show HN: A Hand-Drawn QR Code Alternative by eru on Monday July 27, 2015 @10:33PM (#9959216)
Or on snail mail.