Fingerprinting is a valuable police tool for tracking down suspects, but it's not perfect. However, we can reduce the risk of any mistaken identity if we work within the limits of fingerprinting.
Blood-detection dogs work paw in hand with scientists and Australia's police to solve crimes and missing persons cases.
Using terrestrial forensic science to point the finger of blame to criminals in space will be much harder than it looks.
It could even help crack long-forgotten cold cases.