Answer:
Many applications help in face detection that is being popularly used.
Explanation:
Face book, Instagram, Twitter many more applications are there that are used to detection face. Face book is used as a simple algorithm to analyze the faces in the image and compare it with the relevant users.
There is some unlocking phone face detection app that is used to unlock the phone. But there are some other applications related to face detection that is lesser known applications. There are several techniques that are countable and is used in face detection.
