A scar makes a fingerprint more unique.
None of these have yet been tested by the editors:
- burning off the skin
- razor blades or surgical scalpel to remove the layers
- chemical burn using purified hydrogen peroxide
- create a blister, peel it, rinse and repeat
- carve out portions of his fingerprint patterns and pour sulfuric or boric acid in the depressions
NOTE: Not having any fingerprints at all is very uncommon, and places you into a very small group of people, and removing your fingerprints is probably going to make law enforcement officials more suspicious of you, rather than less. Depending on the method used, it is still likely that your fingers will leave oil-based markings of some form; they just won't look like traditional "fingerprints."