Once upon a time, Richard W.M. Jones <rjones(a)redhat.com> said:
So the problem with github is they don't allow you to have 2FA on
a
backup device (or rather, it *is* possible, but the process is
ludicrous[1]). If you have your phone as second FA and lose it then
you have to immediately fall back to the piece of paper.
I haven't seen a site with TOTP 2FA allow multiple TOTP codes, they all
just store one. It's trivial to scan the TOTP code into multiple
devices (depending on the software used, you can sometimes "export" a
TOTP code from one device to another by showing a QR code on the first
device), so that's hardly a "ludicrous" method.
--
Chris Adams <linux(a)cmadams.net>