Not to make you more paranoid but your fingerprints are the least of your worries.
The FBI maintains 2 million plus DNA profiles in their Combined DNA Index System or CODIS.
Trust me when I tell you that all they need is a DNA sample the size of a pin head to generate a profile on you.
DNA can be extracted from your ear, saliva, can of soda you just drank, the tissue you just threw away, your trash can outside chock full of your DNA from discarded food.