Fingerprinting Techniques Forensic Science SPHS J. Arnold

Rolling Fingerprints on a Ten Card http://www.youtube.com/watch?v=d7N-4UNAzsw Reminders: Right thumb first Roll thumbs toward the body Fingers roll away from body No roll on bottom line Wash hands after PRACTICE BEFORE ON PAPER! How you will be graded: Quality of print & info filled in Be sure to sign the card as the person who took the prints!

Live Scan Fingerprints http://www.youtube.com/watch?v=YX68sxEyjYc

Android App for Fingerprint Lock! http://www.youtube.com/watch?v=XT7Ur5Txe5M Do any of you have this?

Latent Prints http://www.youtube.com/watch?v=mc_l1d--0nQ Use Silver Gray (some use black, white, fluorescent) Latent means _________________ Touch finger to your nose or back of neck and make a print on the glass in front of you. LIGHTLY dip tip of brush into silver gray powder Spin the brush over the print. You may use one hand or two (demo) When the print becomes visible, try to go with the ridge flow. Do not press down or use a sweeping motion. Use the lifting tape to place over the print at a 45 degree angle, and slowly work the tape down, trying to avoid air bubbles. Lift the tape and use the same technique to put on the UNLINED side of the index card Fill out the front based on the example in class.

Ninhydrin Method of Fingerprints http://www.youtube.com/watch?v=fF_v-MymoOk