Small demo - from within emacs, with a libnfc supported reader: search for tags, read one ntag, mark it for comparison, read a second ntag, mark it, arrange the marked windows, and toggle through the different diff visualisation modes (non-matching, matching, blocks, bytes)

Vingcard Classic RFID doesn't even use the abysmal copy protection you can get from ultralight. Wondering if that's due to them being an upgrade to the mag stripe readers, or if the standalone ones are just as bad.

The 2018 paper points to at least some lack of forethought.

The fastest Utah teapot (at least on water)

This is GPT via tools trying to control turtle graphics in an Emacs buffer to draw requested shapes.

As the first attempt worked better than expected it can now go diagonally as well, plus it no longer hits buffer margins - it'll just resize in that case.

Code is here: github.com/aard-fi/buff...