Code 1 mean: finger print(all of your fingers for FBI check and );
Code 2; biometrics ( only right hand indicate finger, digital picture and signiture. these for your future green card)
Code 3 = Code 1 + code 2.
That is all.
Code 2; biometrics ( only right hand indicate finger, digital picture and signiture. these for your future green card)
Code 3 = Code 1 + code 2.
That is all.