A web and mobile tool where users input their door specifications (photos, measurements, lock style, region) and preferences (offline-only, fingerprint, protocol, app ecosystem) to receive a curated shortlist of compatible smart locks with verified compatibility data. The tool aggregates real-user reliability ratings, battery life reports, and installation difficulty scores, filtering out options that won't physically fit or meet the user's privacy and connectivity requirements.

The smart lock market is rapidly expanding with new models releasing constantly, making selection increasingly difficult. Growing consumer demand for privacy-respecting, local-first smart home devices adds another layer of complexity that existing retailer search filters don't address.