4. List and explain three (3) existing application examples where Facial recognition is being used.

1. Security and Surveillance: Facial recognition technology is widely used in security and surveillance applications. It helps law enforcement agencies and security personnel to identify and track criminals, suspects, and missing persons. For instance, in public places like airports, malls, and train stations, facial recognition cameras are installed to monitor and analyze the faces of people. If a person's face is recognized as a known criminal or a person of interest, an alert is triggered, and appropriate action is taken.2. Access Control: Facial recognition technology is also used for access control in various settings. For example, in workplaces, organizations can use facial recognition systems to grant or deny access to specific areas or buildings. Employees can be identified and authenticated based on their facial features, ensuring that only authorized personnel can enter restricted zones. This technology can also be used in smartphones and other devices to unlock them using facial recognition.3. Healthcare: In the healthcare sector, facial recognition technology is used for various purposes, such as identifying patients, tracking their vital signs, and analyzing their facial expressions to detect emotions or potential health issues. For instance, in hospitals, facial recognition systems can be used to quickly identify patients and retrieve their medical records. Additionally, in mental health assessments, facial recognition technology can analyze a person's facial expressions to detect signs of depression, anxiety, or other mental health conditions.