Use fingerprints given for beaurocratic proceedures to unlock your phone

Especially for migrants, the governments (of Europe) takes your fingerprints for all kind of things, beginning with the residence permit. It only occured to me now that that's already a digitized version of your fingerprints. If you later got arrested, and of course eschewing the legality of it, could law enforcements use those images to unlock your finger-print-locked phone?

arrested course europe fingerprints kind law migrants phone privacy things unlock version