[J5892]

The most interesting applications I've seen of QR-codes have been the most wildly impractical or useless.

When I still used my Pebble watch, my favorite watch face was just a QR-code of the time. So to tell what time it is, you have to scan your watch with your phone.

[banana_giraffe]

I love that idea. I couldn't resist mocking one up in Python:

https://pastebin.com/erFSAUvH

[J5892]

I love that it updates every second. It makes it that much harder to actually use.