When walking through Shanghai, or other cities in China, there is one thing you will see in many shops, restaurants and other places: the Maneki Neko, also known as the beckoning cat. Most of them have a mechanism in them, which lets one of their arms (usually the left one) move back and forth endlessly. A while back, a few friends and me were joking about what people would do when all the sudden, instead of going back and forth, the cat’s arm would start moving sideways. The idea had been stuck in my head ever since then, and now, we’re about to find out. So, let’s hack a beckoning cat.