DNA fingerprinting gives police a virtually 'foolproof' way to link a suspect to a crime scene.
a 'foolproof' plan
(..) too much gambling tonight, Alan. Gambling? Who said anything about gambling? It's not gambling when you know you're gonna win. Counting card is a foolproof system. It's also illegal./ It's not illegal. It's frowned upon, like... Masturbating on an airplane. I'm pretty sure that's illegal too. (..)2009 The Hangover