
That’s what I did when I had a fingerprint reader— I used a non-tip part of one of my fingers. So if “forced” I’d just work my way through my fingertips and it would lock out.
This had the benefit that if someone had already watched which finger I used in the past, the print still wouldn’t match.
Funny thing to me about this is that I’ve been using PGP since 1993. OpenPGP became an RFC standard in 2007.
S/MIME became an RFC standard in 1999. And that’s really the reason it has stuck around. It got an 8 year head start on OpenPGP, despite PGP itself being used in email as far back as 1991.