Quoted:
Don't be surprised if they start collecting a DNA sample every time a child is born. Twenty years (+/- as appropriate) from now you just run a sample against the database. Margin of error: effectively 0.00%. Hey, it's just another management "tool." [:(!]
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The problem with a DNA database, is that if someone knows what your DNA "profile" looks like, they can place you anywhere in the world. Kind of like taking a latent of someones print and transferring it to wherever they want.
"This is what the DNA looks like from Mr. Smith."
"This is what the DNA looks like that we "recovered" from the crime scene as verified by our "top-notch technicians"."
"Notice how they are identical"
Meanwhile Mr. Smith wasn't anywhere near the crime scene, but instead had pissed off some high-government officials, or, uh, the Klintons...
Leaves too much room for corruption/framing from the way I see it.