Biometrics & Fingerprinting 3. We understand that there are different codes for submission of biometrics, such as: Code 1: Fingerprints only (10 prints) Code 2: Biometrics (photo, index fingerprint, and signature) Code 3: Fingerprints (10 prints) and biometrics (photo, index fingerprint, and signature) We understand that codes are assigned depending on the application type and or applicants.