Phantom Keystroker V2 is absolutely useless, but extremely funny!

My friend gave me a funny device, it allows you to emulate mouse movements, pressing various buttons, turning on caps. The beauty of the device is that it is imperceptibly enough to connect it to the victim’s computer and that’s all! Most of my friends do not own a blind method of typing, so they always look at the keyboard, but when they raise their eyes ...
At the end, the device has switches and a bullying frequency adjustment slider =)