Biometric technology is a type of technology that uses physical characteristics, such as fingerprints, facial recognition, and iris scans, to identify and authenticate individuals. This technology is used for security purposes, such as to verify a person's identity or to restrict access to secure areas. It is also used to prevent fraud and other illicit activities, as biometric data is unique to each individual and cannot be easily forged. Additionally, biometric technology is becoming increasingly popular for use in mobile devices, as it provides an additional layer of security for users.