Obviously, devices that do not have Play or other Google services do not activatewith Google and therefore do not show up in Google Activation numbers.
The idea that you could silence or activate neurons with light is a powerful one in combination with the tools that Boyden and Forest are working on together.
He's rigged up a catapult to his mini-fridge, a tiny elevator to carry the beers activate a doll with a remote control - and voila, a beer-tossing machine.