Students reverse engineered a French pharmacy cross (a neon sign) and built a C++ library called Lib_Croix to interact with it, creating projects like Tetris, Game of Life, and Rickrolling. The cross became popular after a YouTube video by Sylvqin about two years ago, and second-hand crosses are readily available on e-commerce platforms.
Background
French pharmacy crosses are illuminated green crosses required by law on pharmacy buildings, produced by various manufacturers with proprietary control systems. They have become a cultural icon in France and a popular target for hobbyist reverse engineering.
- Source
- Lobsters
- Published
- Sep 28, 2026 at 03:52 PM
- Score
- 5.0 / 10