imagine a big metal box bolted to the ground, and have that "cameraman bot" take the picture sign it and then you have to sign it too.
you can no longer fake the photo without physically breaking into the "cameraman bot" and somehow hacking its system to get the private key its holding, at which point any ID it made in the past few hours are invalid.
BAM Decentralized Provable Identity! at a fraction of the cost government can do it at.
you could ask new born baby to take a photo with there mother and name the baby.
5 years later you take a picture again with the mother
10 years later the mother signs a the new photo Declaring her son is what she considers "legal age" and this 15 year old boy can now go buy cigarettes!
no longer do we have to socially standardize "legal age"
imagine the possibilities !