But aspiring villains need not worry about being bacterially identified anytime soon. As is, the process is only 70-90 percent accurate, a margin of error too wide for even the most kangaroo courts. There are still a lot of questions to be answered as well: if more than one person has touched a piece of evidence, will the microbial profile be compromised? Is the microbiome stable enough to be used as an identifier (since, for instance, taking antibiotics can alter one's bacterial profile)? Can criminals intentionally alter their bacterial profiles to throw investigators off the trail?