For those curious meta actually bought out a company that orginally pioneered this idea (wrist controller) from a company called CTRL+Labs in 2019. Here is a verge article that has some photos of the prototype from CTRL-Labs. https://www.theverge.com/2018/6/6/17433516/ctrl-labs-brain-c...

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tomhow 3 days ago | parent [-]

https://archive.md/j0d78

Another company doing this (mentioned in the Verge article) was Thalmic Labs, a YC company from 2013, which was acquired by Google in 2020. I remember seeing their presentation at YC Demo Day and it was jaw-dropping stuff; one of the only demos I still remember, 12 years on.

It's sad to see they didn't make it as a commercial success, and is a grim reminder that brilliant innovation doesn't assure a successful outcome.

	▲	Caddickbrown 3 days ago \| parent [-]
		Pretty sure Thalmic sold the tech to CTRL+. I’ve still got one of the bands knocking around somewhere. It was cool tech, but really wasn’t ready for a product. Thalmic then became North to make smart glasses and then got sold to Google