Did you ever watch Star Wars and wondered how people understood what R2D2 was saying? Maybe [Luke Skywalker] would enjoy learning to decode QR Codes by hand, too. While it might not be very practical, it would be a good party trick — assuming, like us, you party with nerds.
This is a companion discussion topic for the original entry at https://hackaday.com/2024/01/22/read-qr-codes-without-a-computer/