That's not not the kind of proof of life the government and companies want online. They want to make sure their video identification 1) is of a living person right now, and 2) that living person matches their government ID.

It's a solution to the "grandma died but we've been collecting her Social Security benefits anyway", or "my son stole my wallet with my ID & credit card", or (god forbid) "We incapacitated/killed this person to access their bank account using facial ID".

It's also a solution to the problem advertisers, investors and platforms face of 1) wanting huge piles of video training data for free and 2) determining that a user truly is a monetizable human being and not a freeloader bot using stolen/sold credentials.