DNA evidence, made to order.

New York Times brings up the unsettling possibility that future biochemically savvy crooks will be capable of fudging DNA evidence:

The scientists fabricated blood and saliva samples containing DNA from a person other than the donor of the blood and saliva. They also showed that if they had access to a DNA profile in a database, they could construct a sample of DNA to match that profile without obtaining any tissue from that person.

“You can just engineer a crime scene,” said Dan Frumkin, lead author of the paper, which has been published online by the journal Forensic Science International: Genetics. “Any biology undergraduate could perform this.”

There is no fail-safe.

found via [the Arboretum].