DNA analysis has become so sensitive that someone could conceivably shake your hand– transferring your DNA onto their skin–and then they could go out commit a crime and transfer your DNA to that crime scene without you even being there.
What kind of demented sorcery is that, you ask?
Exactly! But this transfer largely depends on if you heavily shed your skin cells. They can tell a heavy shedder from a moderate one. In this test, men were the heavy shedders while women were more moderate. But that could be solely based on size. Mens hands and thumbprints are larger.
You can read more about this here.
