“McFly, Jennifer J. Parker. 3793 Oakhurst Street, Hilldale, age 47.” — a police officer. “They used her thumbprint to assess her ID. Since your thumbprint never changes over the years, they simply assume she’s the Jennifer of the future.” — Doc Brown
Apparently, if you’re found unconscious lying in an alley, the police have easy access to a bunch of your personal information. Then again, today they can look at whatever ID is on you. Either way, the police have a massive database of everyone’s thumbprints. What if that data were hacked, as we’ve had so many issues with lately?