1. The document describes a smart authentication system for airports that uses a PIR sensor, camera, computer system, and image processing to detect intruders.
2. When a PIR sensor detects motion, it signals the computer system to activate the camera to capture an image. The image is then compared to images in a database using LBPH and HOG algorithms for face recognition.
3. If the image matches one in the database, information about that person is sent to the owner by email. If it doesn't match, only the image and timestamp are sent. The system was tested on 20 images in a database and achieved an average efficiency of 97.8%.