Improve Workflow for 2nd Factor Authentication
Problem to solve
When I change my smartphone, I have to completely disable U2F in order to see a QR-Code for the authenticator app. This is very cumbersome as I use both the authenticator app (Google Authenticator, in my case) and Yubikey and have to set up both devices again even when just replacing one (Smartphone). A button "Change authenticator app" is missing.
Streamlining the new setup of an Authenticator App by allowing a replacement of the current authenticator app instead of just allowing disabling it along with any associated Yubikeys.
Intended users
Any users who use both a U2F and an authenticator app who replace their authenticator app.
Further details
Proposal
Adding a new function which displays the same qr code as on setup, but upon successful entering of confirmation number simply replaces the current authenticator secret (I guess there is a secret stored for the qr code in the database) with the new secret.
Alternatively, I would love to be able to use several authenticator apps at the same time (maybe giving them an arbitrary label similar to U2F keys).