I would guess (really, just a guess) that 1. government IDs have photos but not all contain fingerprint data. 2. facial recognition can be done at a distance.

I would guess (really, just a guess) that 1. government IDs have photos but not all contain fingerprint data. 2. facial recognition can be done at a distance. In the future, you could be verified walking the building. 3. (tin foil hat) People associate giving fingerprints to the govt with criminals moreso than they do pictures.