thoughts & questions about fingerprint login

[remotedots]

I'm using fprintd for login and i struggle a bit from an user experience point of view.
at this moment, this are the steps that needed to be done in order to login (at least with my config):

1. the user enters his/her user name
2. (a) the user is prompted to scan his/her fingerprint (Swipe your right index finger across the fingerprint reader)
   (b) while prompted to scan his/her fingerprint, the user can enter the password and hit Enter or Log In, but no login is triggered.
3. (a) if the scan is successful, the user needs to use the mouse or navigate with the tab key to the Log In button. Hitting the enter key before being on the Log In button produces no results.
   (b) if the scan fails (e.g. Failed to match fingerprint) or times out (Verification timed out, in my case after 10 seconds), the user needs to input the password. Hitting enter logs the user in.

some enhancements that I can think of are:

• if the scan is successful, the login happens automatically without any extra input (best UX scenario imo)
• if the scan fails, the user can try again maybe another couple of times.
• if the user enters the password while prompted for fingerprint scanning, then the user will still be logged in.

I searched through the issues before i posted and didn't find quickly something on this subject.
if more details, configs or logs are needed, feel free to reach out.
if something could/should be implemented or if further testing is needed, I'd be more than willing to assist.

I'm on a thinkpad x250 with debian buster, lightdm 1.26.0-8 and lightdm-gtk-greeter 2.0.8-2+b1

[Photon89]

I'm annoyed by the fact that you have to press the Enter key after a successful scan as well. The other two enhancements are good as well!

[mjt0k]

Just another "Me Too!" entry. I'm not sure why this issue is filed against xubuntu, while apparently it should be distrbution-agnostic lightdm-gdk-greeter issue. Having the same problem an year later on debian bookworm, - had to replace lightdm with gdm3 to fix this, or else logging in is awful.