After using my framework laptop for a few months, one thing I really love is the ability to unlock my computer and use sudo with the fingerprint reader. I liked this so much I wanted it on my desktop.
The fprint compatability list
https://fprint.freedesktop.org/supported-devices.html
The only option
After looking at my options, I found that only one of these devices was available + not discontinued. The Digital Persona U.are.U 4000/4000B/4500
This device is available new on Amazon for ~$90, but for ~$20 used on eBay.
I plugged it in, configured NixOS to use fprint, and it worked out the box with fprintd-enroll