Earlier quoted context omitted.
> the lack of innovation in AC power plugs Having lived in a country (Thailand) where both Euro and US plugs work just fine as long as you mind your voltage, I have become quite annoyed at that lack of innovation.
How could both be compatible? US plugs are meant operate at 120 volts, EU at 240. I don't see how both could be supported safely.
It's not the plugs, it's the devices (or more commonly now, the power adapters) that work with 120, 240, or however many volts.
Nowadays many (most?) things take both voltages or, AFAICT -- I'm no electrician! -- anything reasonably close.
So in Thailand, for the most part, you can just plug in your MacBook or whatever and you don't need an adapter for the plug itself. Of course, if you're wrong about the voltage, things might go bad.
And as the other reply noted, this convenience doesn't make it safer, quite the opposite. But I just generally have realized there's a lot of innovation that could be done in plugs and sockets, but isn't being done.
As someone else commented above, the UK plugs are really interesting... but in my opinion maddeningly, unnecessarily big.