seaborgium wrote:bpmod wrote:Now to think of another way to obfuscate a QR code.
Do you want to change what it says, or make it unreadable? I know that the large squares in or near the corners help the code reader figure out which way it's oriented. Also, there's a row of alternating blacks and whites between the bottom-most lines of the two top squares, and a column of them between the right-most lines of the two left squares. I don't know what those do (the Wikipedia article says "timing," but I'm not sure what that refers to), but altering those might go a long way toward creating an unreadable QR code that still looks like one (and can be repaired with a little work by someone aware of the patterns).
I want to make it readable, but as gibberish, while keeping it readable another way to provide the correct output. I guess the whole reason for the various control codes within the QR code is so that it can be read only one way.