Had a peek at it and liked the ui a lot. Thanks for the great work!
I looked also at the issues for support of yubi key, openpgp card or nitrokey and found some issues saying that it would be great to have.
Is there actual work going on?
Especially if used on a phone (which is more likely being lost than a desktop) like #librem or #pinephone it would be much more secure to have an external usb device as a second factor.