Feature: Trigger On Duration of Press

My elbow is fuckered & for me to reach the backspace key is kinda painful. I'd like to set up my keyboard so that if I hold the spacebar for two seconds, it does a backspace. Ideally, I'd be able to hold it & get repeated backspaces at the regular repetition rate. Whether or not this'd be conducive to typing, I dunno, but I'd like to try it. 😺 Actually, now that I think about it, every time I tried to trigger the behavior I'd end up with a bunch of extraneous spaces. So, the space bar would need to only output a space on key up. This seems like it's getting to be a bit much to ask of y'all's program. Love to at least hear theories as to the feasibility. I could imagine doing it in the browser, maybe. I reckon Ctrl + Space gets me about 90% of the way to the ergonomics I want, though I think the pause interjected by a long press backspace could be good for the cadence of typing.