pkair/wrist-key

Wrist Key is a small app for the Pebble smartwatch that lets you control a WiFi enabled Nuki smart lock right from your wrist, without pulling out your phone. It lists every lock connected to your Nuki account, shows whether each one is locked, unlocked, or open, and displays battery information, a percentage on newer Pro locks, or a simple low battery warning on standard locks that don't report a precise number. From the watch you can open, unlock, or lock a door with a single tap, and the watch buzzes briefly to confirm success or with a longer buzz if something goes wrong. Long pressing a lock in the list tells the Nuki hardware to report its current state fresh before you act on it, so you are not relying on stale information. The app runs on every generation of Pebble hardware, including the round Pebble Time Round and the newer Pebble Time 2. Setting it up means installing the watch app, opening its settings on the connected phone, and pasting in a personal access token generated from Nuki's web dashboard, with permission to view and operate your devices. That token stays on the phone inside the Pebble companion app's storage and is never sent anywhere else. Once saved, your locks show up in the watch app automatically. Under the hood, the watch side handles the lock list and screens, while a JavaScript bridge running on the paired phone talks to Nuki's web API and passes information back and forth, using a small handshake so the watch never asks for data before the phone side is ready. Building the app requires the Pebble software development kit, commonly obtained through the Rebble community project that keeps Pebble development alive after the platform's official shutdown. The project is released under the MIT license.