And the spacebar key, when hit, sounds different than the other keys. I'm not good with onomatopoeia but normal keys generally go tack-tack-tack while the space

And the spacebar key, when hit, sounds different than the other keys. I'm not good with onomatopoeia but normal keys generally go tack-tack-tack while the spacebar goes tchick-tchick-tchick. It's noticeably different. This could actually prove quite scary since if you know the length of the 'tack', you're basically doing stupidly simple linear cryptanalysis.