A biometric lock is a security device that uses unique physical characteristics of an individual to grant access. Common biometric traits include fingerprints, facial recognition, and iris patterns. These locks are often used in homes, offices, and secure facilities to enhance security by ensuring that only authorized users can enter. Unlike traditional locks that require keys or codes, biometric locks provide a more convenient and secure method of access. They can be integrated with smart technology, allowing users to manage access remotely. This technology is part of the broader field of biometrics, which encompasses various methods of identifying individuals based on their biological traits.