Tag Archives: STEM

Mundane Monday: Fingerprints

This week’s Mundane Monday theme #164 is “A Use for Hands.” I am posting it on Tuesday because of European hotel wifi bandwidth failure.

Last week my hands were used in a fingerprint forensics STEM outreach activity.

There are 3 classes of fingerprints: arch, loop, and whorl. Arch is the least common, with only 5% of fingers in the USA exhibiting an arch print. My right index finger happens to have a good arch.

IMG_3492

So, I made a bunch of examples.

IMG_3493

They were used in an outreach activity at a STEM festival last weekend. Kids who came to the booth had to figure out who stole the candy, based on fingerprint, hair, and cryptology evidence.

Here’s one of the suspects. (My hair is not really pink: it’s an app!)

IMG_3494Mug shot of the Strawberry Snatcher