The new Stimp has a few other minor improvements, such as tighter manufacturing tolerances to make sure the ball comes out of the holes just right and a serial number on each one.
Dr. SKRAPEC SYNC: Right now if there is a criminal like a serial killer or bank robber, they are able to print in the code, 'cos each face you make has a particular code, a number for the eyebrows and a number for the nostril.