When you arrive at the Port Authority Security in the cruise terminal, you will pass a security checkpoint where all carry-on luggage goes through X-rays and other baggage is checked in. All checked bags on cruise ships are scanned.
Passengers must pass through an airport-style detector and they will have a digital photo taken. Most cruise lines employ former police or military personnel to process boarding checks, and scent dogs may be present to check for drugs, which are among many items prohibited on board. Any sealed alcohol usually is confiscated and returned at the end of the cruise, both at home port and ports of call during the journey.