Answer:
The correct answer is D. Facial biometrics.
Explanation:
A face recognition system is a computer program for identifying people from photos or videos. Face recognition is performed according to the geometric characteristics of the face and is compared with a database. It is also possible to determine the sex and estimate the age of persons. The main advantage of these systems is that the people who are going to be recognized by it do not need to enroll or provide their data on some previous basis, but, on the contrary, this system can extract images even without the consent of those investigated .