To use the electronic device, We use electricity everyday. So We need the socket to use the electronic device. This is very essential for everyday life. And We can't do anything without electricity.
Using the socket very easy and fool-proof. Just plug in, and you'll use the electronic device. But the socket aren't available, you might be embarrassed. I find it fun and interesting. So I make a simple scenario.
My socket recognizes users When they approach. And When people approach, the might to let us do it.