Auto-locking devices are mechanisms designed to automatically secure doors, gates, or other entry points without the need for manual locking. These devices enhance security by ensuring that an entry point is locked after it has been closed, reducing the risk of unauthorized access. Common examples include smart locks, deadbolts, and electronic keypads. These devices often feature various technologies, such as keyless entry systems or biometric scanners, which allow users to unlock them using codes, fingerprints, or smartphones. Auto-locking devices are popular in both residential and commercial settings, providing convenience and peace of mind for users concerned about safety.