“World Record Attempt To Identify Fingerprints” Key Stage 4
What do these fingerprints belong to? KOALA HUMAN PRIMATE
Are twin fingerprints the same? No, they are completely different!
Are all your fingerprints the same? • Before you are born, your fingerprint patterns are set for life and are completely random. • You could have all “loops” for instance, or you could have a mixture. • NO ONE IN THE WORLD HAS THE SAME FINGERPRINTS!
Galton & Vucetich Sir Francis Galton Juan Vucetich A British anthropologist and a cousin of Charles Darwin, began his observations of fingerprints as a means of identification in the 1880's. Vucetichwas an Argentinian police officer who made the first criminal fingerprint identification in 1892. Francisca Rojas, murdered her two sons and cut her own throat in an attempt to place blame on another. Her bloody thumb print was left on a door post.
This is the equipment you will need Fingerprint Taking Form Fingerprint Ink Strip
Can You Take Your Own Fingerprints? We are going to enlargethis later!
What type of fingerprints do you have? ARCHES (5%)LOOPS(60%) Plain Arch Tented Arch Ulnar Loop Radial Loop WHORLS (35%) 1% RAREST! Plain Whorl Double Loop Central Pocket Accidental (loop)
What are these? (Quiz) Ulnar Loop Double Loop Plain Whorl Accidental
Thumb Print BRIDGE ISLAND-SHORT RIDGE RIDGE ENDING BIFURCATION What type of fingerprint is this? HOOK LAKE ENCLOSURE
SPECIAL CHARACTERISTICS OF YOUR FINGERPRINTS Ridge Ending
Suspect fingerprint sheet • A suspect’s fingerprints taken at a police station are called “known” fingerprints. This is because the police “know” they belong to the suspect. • An unknown fingerprint left at a crime scene is called a “questioned” mark (this is because until the person is identified; it remains in question..)
8 Points of similarity enough to identify a suspect uniquely! “QUESTIONED MARK” “KNOWN MARK”
THE ACTUAL WORLD RECORD ATTEMPT! How many people can the match the “unknown” fingerprints with the suspect fingerprints?
Suspect fingerprint sheet I am a suspect HELP
Can you find identifying points on the next slide? Can you see a RIDGE ending?
Are These Tigers The Same? BIFURCATION
Take Your Own Footprint (Team Exercise) Give yourself a good space! Take off your shoe and sock. Peel open one, two, or three NEW ink strips. Gently step on the ink strips and transfer your foot to the A4 piece of paper. Wipe the ink off. Write your name on the footprints you have just taken.
How Did You Get On? WELL DONE!