My project was about seeing which surfaces were best for fingerprinting.  At first I picked 3 different types of papers such as regu;ar printing paper, thin paper and the old fasion finger print paper that the police use.  I also picked 3 different colors to use and they were blue, red, adn black.  I went to a police departiment and I had an officer help me.  When my project was well finished it was an fact that the black was the easist to see and the old fasion finger print paper. Which is one of the reasons why the police station used the black ink and they hard paper for the criminals.