Biometrics are broken by design. If someone guesses a password, you can change the password. If someone gets a viable replay of a fingerprint or iris scan, yo

Biometrics are broken by design. If someone guesses a password, you can change the password. If someone gets a viable replay of a fingerprint or iris scan, you can't change it. I wonder if a formalized "delegation of identity" system could solve the "missing key" problem. When you have your key, you'd be able to issue a "I trust this person/firm to reliably identify me" certificates to others. This could potentially be trusted friends/family/co-workers or even official "recovery services" that had different means to verify identity. So if you lose your key down the road, you can bring one of these people along, and the fact they had your certificate, and vouched that they had identified you, and that would be considered legally equivalent to presenting your actual key, or allow the start of a key-reissue process.