Take their DNA, finger prints, and anything else that may be needed, log them into a "Big Brother" database, then stamp them on the forehead or right hand with a bar code.
Wouldn't that be nice? We could "prevent" crime and "protect" everybody?
Hell we could even embed them with a GPS device so we can track their every move and if they go missing, find them quickly.
JUST THINK OF ALL THE POSSIBILITIES!
We should also have everybody take a sexual exam every couple years to make sure they are not becoming sexual deviants!
NOTE: We are kidding, but it's coming to this really quickly!