computer vision face recognition
Is facial recognition computer vision? Which algorithm is used in face recognition?

Facial recognition and biometric scanning systems also use computer vision technology to identify individuals for security purposes. The most common example of computer vision in facial recognition is for securing smartphones. More advanced uses of facial recognition and biometrics include in residential or business security systems that use unique physiological features of individuals to verify their identity. Deep learning algorithms can identify the unique patterns in a person’s fingerprints and use it to control access to high-security areas such as high-confidentiality workplaces, such as nuclear powerplants, research labs, and bank vaults.

These automated systems can be used to identify or check the identity of individuals in just a few seconds based on their facial features: spacing of the eyes, 
To learn how to perform OpenCV face recognition, just keep reading!