"Get a Smart Meter", they say!
"It'll save you electricity", they say.
For me, maybe yes. For my DSs? It will be a cold day in Hell when they realise that electrical things have an 'off' switch as well as an 'on' switch.
But if I microchipped them I could put a sensor in each room that would know when the room was empty and then turn off all the lights and TVs and games machines and and and.
So it would save on electricity by not lighting empty rooms and save me energy by not going round the house constantly turning things off.
Personally, I don't see the problem.