Invention Protip #4

So I came up with this invention idea while at work. I'll call it the touchless screwdriver. It like a screwdriver but instead of turning the handle you just press a button and it screws in. I don't exactly know how it works. Probably something to do with resonant frequencies, some sort of Tesla things. Anyways here is a video. The quality is pretty bad, 720whatever. But as you can see the screw does tighten.

So have a look and try to explain whats going on. But just think of all the applications something like that can be used on. cheers.