**The problem it solves** STR hosts and apartment operators want keyless guest entry without replacing the door lock or running new wiring, and they need the access codes to expire automatically when the booking ends. **What Nuki does** Nuki is an Austrian smart lock manufacturer producing retrofit electronic door locks and access control hardware. Its devices add keyless entry to existing door cylinders without replacing the lock, primarily across Europe in residential homes and short-term rentals. Hardware is designed in Austria and manufactured in Europe. **How it works** The product range covers the Smart Lock Pro, Smart Lock Go, Smart Lock Ultra, Keypad 2 (NFC, fingerprint, numeric), Door Sensor, Fob, Opener (for apartment building intercoms), and the Bridge for Wi-Fi. The Nuki app handles permanent and time-restricted access codes, a full entry activity log, automatic locking, unlock timers, and remote control. For STR operators, Smart Hosting auto-generates time-bounded guest access codes from the booking window. Codes are sent before arrival, expire at checkout, and revoke automatically on modification or cancellation. Native integrations cover Airbnb, Smoobu, Guesty, Hostaway, and Uplisting; the public Web API (REST + webhooks + OAuth) supports any other PMS. **Who it's for** STR hosts, small-to-mid-portfolio property managers, and apartment building operators across Europe who need contactless self check-in on existing door hardware without rewiring or replacing the lock.
Listed on STR Market Map, the short-term-rental software marketplace.