Inspired by the movie Gattaca, and how sites like Ancestory.com actively help find criminals who haven't submitted their DNA simply by using relatives who have willingly submitted their DNA.
Say that Bob the biochemist obtains (without explicit permission) a DNA sample from David (either a piece of hair that fell off, or some stray skin cells, or a used cup that David threw away, etc.). Is Bob allowed to use David's DNA? Some examples of how David's DNA could be used:
- Finding out that David is the true father of Bob's child
- Finding out that David has increased risk of many diseases, and telling David's girlfriend/employer/health insurance company about this
- Finding out that David's DNA is a match for DNA at a crime scene, and reporting that to the police.
On one hand, it seems like a tremendous breech of privacy. But on the other hand, it seems as "natural" as announcing someone's apparent age to the world. Both are "surface level" things that anyone can have access to so long as David isn't shut up inside a bunker. I'm not sure what the official answer is.
I'm obviously not a biologist or lawyer, so please consider answering the "spirit" of the question, instead of the "letter" of the question, in case I haven't gotten the reality of things exactly straight.