Thinking in product terms instead of surveillance terms, imagine wireless keyboards that don't need batteries, bluetooth, or even any internal electronics!
I can also see a future home assistant using a laser microphone to pick up on users' speech from anywhere in a room without needing to raise one's voice above a mutter.
I can also see a future home assistant using a laser microphone to pick up on users' speech from anywhere in a room without needing to raise one's voice above a mutter.