re: #15 Cato the Elder

If I could get an old IBM Selectric typewriter keyboard to work with my iMac, that would be the coolest. That thing had best positive feedback feel of anything I’ve ever used.

It also had a security vulnerability. The time delay from keystroke to the ball impact was unique for each character. Bad guys recording the sound could reconstruct its output by analyzing the delay. (Or so we were told.)