Paper Memory PMCode
From Just Solve the File Format Problem
Revision as of 21:18, 28 July 2023 by Parchivist (Talk | contribs)
PM Code is the abbreviation of Paper Memory Code and was invented by T.Onoda. It appears to be a QR Code with a variable amount of colours
Here's a Christmas card that plays a MIDI for We wish you a Merry Christmas: