The technology utilized for facial recognition systems includes image processing and machine learning algorithms. These systems analyze facial features and compare them against a database of known faces to identify individuals. Specifically, deep learning techniques, particularly convolutional neural networks (CNNs), are commonly employed to improve accuracy and reliability. Facial recognition technology is used in various applications, such as security, law enforcement, and personalization in marketing. However, it raises ethical concerns regarding privacy and surveillance, necessitating responsible implementation and regulation.