4. A luggage handling and reconciliation system according to claim 1, wherein said luggage handling and reconciliation unit further comprises: (1) a memory unit for storing biometrics data obtained from passengers by said at least one biometrics data input device located at an airplane boarding area or an airplane gate area; and (2) a computer, coupled to the memory unit, for comparing biometrics data stored in said memory unit, which was received from passengers as they board an airplane for a particular flight, with the biometrics data of all luggage identification documents for said particular flight, to determine the existence of suspicious luggage, tagged with said luggage identification document, which contains biometrics data of a passenger who has not boarded said airplane.
6. A luggage handling and reconciliation system according to claim 4, wherein said luggage handling and reconciliation unit further comprises a transmitter/receiver unit for identifying remotely said suspicious luggage by retrieving the data stored on a plurality of luggage identification documents attached to various items of luggage and comparing this data with the respective data of a passenger who did not board the airplane.