QR Doorbell - KNOC

KNOC is a simple QR doorbell for homes, offices, rentals, studios, and small spaces. Create a door, print or share its QR code, and let visitors leave a knock without installing an app. Owners can receive visitor messages, view door activity, and reply from the KNOC app. KNOC is built for simple, practical door communication: • Create a QR doorbell for a real door or location • Let visitors scan and leave a message without an account • Receive knocks from visitors when they arrive • Reply to visitors from your phone • Use text, photos, or audio when available • Manage your doors and account in one place KNOC does not require special doorbell hardware. It is designed for people who want a lightweight way to know who came by and respond without installing cameras, wiring devices, or asking visitors to download an app.