why does the inner cycnic in my think this is just to get some facial recognition data
https://mobile.twitter.com/search?q=elementary%20(fingerprin...
This is like taking a DNA sample from child when they're born nowadays, it seems harmless now, but we can already see companies using this kind of data maliciously.
The point was that if your child goes missing, you have their fingerprints available so they can be used in investigations. In our case, the fingerprints were given to us to take home in case they were ever needed. At the time I didn't think to ask if the police kept a record for themselves, but I doubt it (just because local PD wasn't very organized).
See also ECAP: https://www.fbi.gov/wanted/ecap