We know that one of the best ways to 1.catch a thief is by collecting fingerprints from a crime scene and then 2. Comparing them to others with a computer. But how difficult is it to get the prints?
Try this: Press a finger onto a drinking glass. If your finger and oily or wet, the print will be better. Then cover the print with a small amount of powder. You can use things you have in your kitchen, such as flour or cocoa powder.
Now remove some of the powder with a small, dry paintbrush. Go in a circular 3.direction until you see the print. Then place some tape over the print. Take the tape off and put it on a piece of paper. If 4.possible, use colored paper. You should now see the fingerprint clearly.