You can't be possibly talking about a light switch, right? :) That's exactly what I'm talking about. I want something as simple as a light switch to control the colors of my lifx, Hue or control my sonos speakers.
This is literally a toy.
You need a light bulb that listens to you. "LIFX BLUE PLEASE!!" you yell, and so it is.
Maybe it's top secret, worthy of some serious VC. But you can probably guess what it is :-)
Now smart phones - she gets those too but she finds it so annoying. Adverts on youtube serve to cause confusion. That action bar on the Android is annoying. She says 'waaah' when the screen is locked. Etc.