You can find the directions here.
Visitors to the N * ICE can enter through Gate 32 using automatic licenseplate recognition.
Guests can register for this at ccs.fraport.de. A visitor ID is not additionally required here.
Visitor IDs for the security area and airport replacement IDs are only available at Gate 3 from this point on. From Terminal 1, Gate 3 can be reached with the CCS or OST staff bus. ID cards are issued around the clock.