Enterprise access control systems replace physical keys with electronic credentials — proximity cards, smart cards, mobile credentials, or biometric identifiers — that can be programmed, issued, revoked, and logged centrally. When an authorized credential is presented at a door reader, the system grants access and records the event in an audit log. Unauthorized attempts are denied and flagged. Access control systems integrate with video surveillance to link access events to camera footage, and with alarm systems to trigger responses to unauthorized entry attempts. For venues with sensitive areas — hotel service corridors, backstage areas at events, pharmaceutical storage in hospitals, control rooms in stadiums — access control provides both security and a documented record of entry activity.
