To prevent dangerous individuals from entering the in the first place shall be emphasized. The process commences when passengers are asked to show photo identification before allowed to board the aircraft, or with more advanced technology by providing biometric evidence (finger print, digital photographs and retinal scand of themselves, that they claiming to be. In some countries, there are "terrorist watch list" compiling the individuals whose activities or affiliations raise the possibility that " they intentions are sinister. Especially, in the US there is system called " (CAPPs) which would explore through publicly available information whether any aspects of the passenger's past life argue especially stringent screening at the airport. This photo show biometric data immigration on arrival Kotakinabalu Ma