[nottorp]

> TOTP does not require one app for each service

That is, if your vendors all agree on something.

> Seems you have limited experience un both subjects

Yes, also limited experience on identity theft. Care to comment on my suspicion?

[mcronce]

TOTP is a standard; if your vendor supports it, that _is_ them agreeing on something.

[_flux]

I have a bunch of vendors (e.g. Microsoft, Google, Gitlab, VPN, others) in the same OTP app in my phone, so my belief is that they seem to agree just fine.

There are of course examples of vendors that don't. I think Steam is one of them. And my bank.