Machine learning has become more and more powerful, to the point where a bad actor can take a photo and a voice recording of someone you know, and forge a complete video recording. Bad actors can now digitally impersonate someone you love, and trick you into doing things like paying a ransom. To mitigate that risk, I have developed this simple solution where you can setup a unique time-based one-time passcode (TOTP) between any pair of persons.
Github: https://github.com/ksze/PeerAuth