Multiple 2FA registrations per account

[LeeteqXV]

FYI - Related Mastodon feature request:
"Multiple 2FA registrations per account" (TOTP + U2F)
mastodon/mastodon#10149

Google Accounts is a good example of this flexibility.
With the ongoing decentralization, it is becoming more and more important that users of various systems may have a good level of security while also enabling themselves to recover from login problems on their own, without support/assistance. Multiple 2FA registrations alleviates this, among other practical uses.

[mediafinger]

I am using devise-two-factor in my project. I display the QR code there and the account holder can connect as many apps/devices as (s)he wants. I myself test usually with Authy and GA in parallel.

[McPringle]

This feature would be great for shared accounts. We have an account for our Java User Group which is managed by two people. Unfortunately we can't use 2FA now.

[Hugo-Heagren]

Came here to suggest this -- adding my support. This would be a great feature.