I remember my oldest son built a mobile platform with a tablet on it, so he could bother his sister at college remotely! He put his face on it, and the tablet w

I remember my oldest son built a mobile platform with a tablet on it, so he could bother his sister at college remotely! He put his face on it, and the tablet was on a stick that could rotate as well. that was over 5 years ago. He was 15 around then. Anything particularly novel about this platform from other phone/tablet robot projects?