Crime Scene Fingerprint Chart

hi I'm Matt Steiner matt is a senior crime scene analyst he explained how crime scenes worked in technique critique so in this case he uses deductive reasoning to come up with the handedness of our victim Louise is a staff writer at Wired matt is going to teach Louie is how to lift fingerprints from different surfaces ranging from easy ones to difficult ones so I put my fingerprints on a bunch of stuff where should we start let's start with something easy so what do you see here what should we be thinking about when we're looking at this Plexiglas the first thing we want to consider is the surface itself the most ideal surface for fingerprints is something that's smooth and non-porous and that's what we got here we have Plexiglas it's great for fingerprints so now we prepare our fingerprint powder and our brushes we're gonna use what we're gonna do is we're gonna coat the brush with pow