A most excellent example that highlights what should and should not be captured and stored. Though sadly even today we have forms from doctors/governments that

A most excellent example that highlights what should and should not be captured and stored. Though sadly even today we have forms from doctors/governments that ask for race (I always out of principle scrub that out and write "human"). But then they say these metrics are captured to help prevent discrimination kinda argument! As your wonderful example shows, that can be abused. Really gets down to DNA being useful and abusable in many ways. The real onus should as always with such personal data - be in the hands of the individual and with that, the ability to opt-in/out choice needs to be there. I'd have no problem of my DNA to be used to help identify a crime perpetrated by some genetic relative, some on the other hand would not. But the choice should be with the individual and a complete ban, removes that right from those who would want to aid justice. When things can be used for good and bad, blanket bans do not work out as well and it should be down to a default position of no, but the ability for individuals to opt-in.