Its kind of strange. Im using that sketch. On iOS it mostly works....but on ubuntu, im not able to register any keypresses at all. MIght be something on the OS itself.
Ill try to record a video when i get back home so you see what im getting(and my super sketchy proof of concept jumper cable setup).
Sidenote: Im not able to pair the bean+ with windows10 AT ALL, even tho i CAN program it with that same dongle.