Super Recognisers instead of software?
People with exceptional memory for faces have been way more effective for the Met than facial recognition software in identifying crims based on images - cope better with subject aging / hiding parts of face too.
They (Met) reckon 10+ years before facial recognition software can out perform their super recogniser team
e.g info at
http://www.newstatesman.com/politics/uk/2016/08/super-recognisers-scotland-yard