Comment by brownbat

I'm glad people are realizing that radio waves aren't the only ways to send signals around a room.

I really want someone to make a wireless, powerless keyboard where every key's click is tuned to a slightly different sound.

Keylogging by acoustic emanations is a well researched technique, I just think it could be a feature if we made the keyboard right. https://www.schneier.com/blog/archives/2005/09/snooping_on_t...