yes, because it's almost impossible to hack a 3fa at the same time. The hacker have to hack your email + your cloud account + a face scan. it's possible to hack the email and cloud if they are not well secure with a strong password but not the face scan basically the hacker gonna have to be with you and force you to scan your face, because it doesn't works with a video or pictures. and the verification of the 3fa in the servers are using MPC so it's secure with high level cryptography, very hard and too expensive to hack
Discussion
Sorry your reponse does not convince me
Email is not secure,
cloud less secure,
face scan (what about AI)
And i always understood, the more secure is not using Internet
if you are using 2fa for your email, the probability of remote attack are close to zero. The face scan is constantly battle tested and use AI for improving and updating.
check this post : https://zengo.com/how-zengo-guarantees-access-to-customers-funds/
All the best for your product...