A mobile app where users photograph their existing door hardware and the tool uses image recognition to identify the lock type, door thickness, and handle configuration, then returns a ranked list of compatible smart locks filtered by their preferences (fingerprint, offline/local-only, WiFi, Zigbee, budget, region). Includes verified fitment data sourced from manufacturer specs and community-confirmed installs.

The smart lock market is rapidly expanding with new models launching constantly in 2025-2026, making the compatibility problem worse each quarter. Meanwhile, consumer demand for local-first and offline smart home devices is surging due to growing privacy concerns and cloud service shutdowns.