State Police spokesman David Procopio said Monday that Francis Viliar admitted to police that he paid someone $400 to slice off the fleshy pads at the ends of his fingers.
The 36-year-old was arrested Friday after state police pulled him over for speeding in Brockton. He was charged with giving a false name and carrying a dangerous weapon.
During booking, officers discovered that his fingertips were covered in scar tissue. FBI specialists were still able to identify Viliar, who had 13 warrants, using ridges from the prints.
Viliar's attorney, Lawrence Perlmutter, declined to comment late Monday.