[akssri]

Very cool! Old keyboards and key-switches are an endless source of fun trivia.

I think Topre is the only one that manufactures keyboards with contactless key switches today. Topre key-switches measure the change in capacitance instead, and their keyboards (of the HHKB fame) sell for greater than $200.

https://www.keychatter.com/topre-switches/

[thesmok]

You can also get Topre switches in Leopold keyboards, models ending with letter C (for capacitive).