anything that makes you think is good...
but of course it can be planted and the collection of DNA is most dangerous.
Those that collect DNA and store it should be completely separated from those who investigate (ie-the police
those who collect it and store should have no knowledge of whose DNA they collect.
As it is..it's like handing future evidence to police for future crime scenes...evidence that can fit
any crime scene.
of course now they have educated the public anyone can set up anyone else via DNA.
We need mini cameras in our heads that record our every movement. I have one in my car.