Many moons ago I used a word processing program called "Wordstar". It ran under the CP/M operating system, off a CP/M card in my Apple II+ computer. Like most word processors and editors of the day, it made use of numerous control key combinations. As an experiment, I bought a foot switch and wired it to short the control key. Within just a few days I had 11 fingers and was flying on the keyboard.
Somehow, foot switches never seem to have caught on. I'm wondering if anyone here uses or has used one (VIM, Emacs users?). I did a search of the site, but nothing turned up. I just ordered a HHKB Pro 2, and thought of trying a foot switch with it (no soldering this time). Any suggestions of particular foot switches would be appreciated. (Topre would be nice. :-) )