I think it will be quite some time into the future, before AI can impersonate humans in real life. Neither hardware, nor software is there, maybe something to fool humans for a first glance maybe, but nothing that would be convincing for a real interaction.
Implemented so that if a person in your web vouches for a specific url (“this is made by a human”) you can see it in your browser.
If that isn’t exciting enough, Sam Altman (yea the one who popularized this LLM slop) will gladly sell you his WorldCoin to store your biometric data on the blockchain!
If Google wouldn't have let perfect be the enemy of good and had added PGP support to Gmail early on (even just the shittiest signatures that are automatically applied and verified), the world would be a completely different place. Scams just wouldn't exist at this scale when signing mails with a known key would be the standard.
The tech is there, now we have Matrix and XMPP and PubSub and god knows how many protocols to share keys. Even Keybase.io still kind of exists.
What is lacking is a browser ecosystem for people to use their known identities to vouch for a specific url (with smart hashing so that changing the content would invalidate the trust).
We have the technology. Someone(tm) "just" needs to build it :)