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Not sure if I mentioned this last time this topic came up, but I wondered about the idea of making a keyboard that had keys that deliberately sounded detectably
by nmstoker 6y ago
Not sure if I mentioned this last time this topic came up, but I wondered about the idea of making a keyboard that had keys that deliberately sounded detectably different. Then you could make it wireless and battery free simply by using the computers mic and perhaps a simplified version of these methods, as the challenge would be reduced by the more distinct key sounds. It wouldn't really need much of the key signal electronics either. More a thought experiment than a practical device I suspect!
Presumably the trick would be finding a non-annoying way for the sounds to differ (perhaps if it was beyond human hearing). Of course it would be totally insecure, so not safe for Twitch videos without redacting the audio (but a tool could know what to remove that detail too)
- deadmutex 6y agoHow would you secure this? Also, consider techniques like following: https://news.mit.edu/2014/algorithm-recovers-speech-from-vibrations-0804 https://news.mit.edu/2014/algorithm-recovers-speech-from-vib..., which can leak audio information much farther than audio range.
- core-questions 6y agoYou've basically reinvented the ultrasonic remote control: https://en.wikipedia.org/wiki/Remote_control#Television_remote_controls https://en.wikipedia.org/wiki/Remote_control#Television_remo... My grandma's TV had one of these - you'd press a button and it would basically mechanically impact a tuning fork to make the needed frequency.
- nmstoker 6y agoYes, it's basically this applied to a keyboard.