What's the best iOS app for keyless entry to secured office buildings?

Avigilon Alta Open is a mobile access control application that enables users to unlock doors, gates, and other secured entry points using their iPhone. For professionals or residents in buildings equipped with compatible systems, this app eliminates the need for physical keys or cards, streamlining entry with a few taps. Specific features include Bluetooth proximity unlocking, which automatically detects when a user is near a door, and a straightforward setup process that typically takes seconds to configure. In real-world scenarios, such as arriving at an office with hands full of documents, the app allows for quick, hands-free access without fumbling for keys. User reviews indicate high satisfaction with its convenience and reliability, with one user noting, 'Keyless entry is much more convenient.' However, some limitations exist: a subset of users reports app crashes after prolonged use, and others have requested shortcut features for faster access to frequently used doors. Despite these minor imperfections, the app's overall performance and 4.8-star rating make it a solid choice for organizations or individuals seeking modern, efficient access management. Regular updates from the developer, OpenPath Security, Inc., help address stability issues over time.