SO GUYS I FOUND MY ANSWER LOOKS LIKE ILL BE GETTING A GREEN CARD LOL JK CODE 2 DOES NOT RUN THRU A BACKROUND CHECK THOUGH ITS USED FOR CARD PRODUCTION SO IM GUESSING THEY ARE USING MY FIRST BIO CODE 3 .......Biometric processing includes the electronic capture of an applicant’s photograph, signature, index fingerprint and ten-print fingerprints. The photograph, signature and index fingerprint are used to generate the lawful permanent resident card, if the Form I-751 is approved. The ten-print fingerprints are captured for the purpose of conducting a criminal background check and are processed for applicants between the ages of 14 and 79.