OPPEN provides mobile-based access control systems for residential complexes, kindergartens, offices, hotels, and other properties. Its service replaces traditional keys and access cards with a smartphone app, allowing authorized users to enter equipped doors, gates, parking barriers, and shared spaces. The system also supports hands-free entry and lets users grant access to guests or service providers.

For property managers, OPPEN offers tools to administer access permissions, including setting different access levels and managing users through personal accounts. Kindergarten implementations can help staff monitor when children are brought in and collected, while lost or unnecessary cards can be deactivated. Residential communities can use the system to manage entry points and share news with residents.

OPPEN’s offering includes a mobile application, an online portal, access-control equipment, system installation, warranty support, and information about security and system capabilities. The company presents its solution as a way to improve convenience and organize access without relying on easily misplaced or copied keys and cards.