Following precautions need to be observed by the air travelers and the visitors:
Whenever they observe a suspicious person, the matter should be reported to the security agency/terminal manager.
Passengers and visitors shall keep a vigil at all times whether on ground or in flight so that no unauthorized person is able to either remove or place an object in their baggage without their knowledge.
Passenger should not accept any item to be carried by them on the flight from unknown persons since these might be prohibited items and / or explosives which might warrant action against the concerned passenger.
Passengers while retrieving their registered baggage from the conveyor belt or the arrival hall must take care to pick up their own baggages by tallying the serial number of the coupons given to them at the time of checking in by the airlines and the numbers on the tags of the baggages.