Who besides me has multiple monitors AND multiple computers, with multiple keyboards and mice?
How many times have I typed on the wrong keyboard? Answer: a lot. People in my telegram/whatsapp chats often get command line entries blotted into their threads (they are used to it now).
I think the answer is a switch of some kind that appropriately directs the keyboard and mouse to the correct computer, based on gaze direction of the user. That is, what monitor the user is looking at.
I think this can be done with a Raspberry Pi, a decent webcam, some CV software, and some USB voodoo on the Pi. 9 years ago I built a commercial eye tracking product. The speed of a modern RasPi, together with 9 years of additional maturity for open source tools in this domain, should be adequate to get this done. I’m happy to contribute that element. If there’s anyone here who knows a lot about USB hacking in Linux, I’d love to team up to build this. If you want to do a kickstarter or something, that’s fine, but I’m not interested in doing the marketing. If you are, great. If you want to make in OSHW, that’s fine with me, too.