Logging into your account from another smart device will log you out of your account on your lost or stolen smart device, and will disable all eKeys on it. You can also disable your lost or stolen device using the web portal.
TO DISABLE A SMART DEVICE USING THE WEB PORTAL:
1. Log into your account at www.my Kevō.com
2. Go to Settings > Devices
3. Click the "DISABLE" button next to the device you would like to disable and it will be deleted from your list of devices. It may take a few minutes for the device to receive the command to become disabled.
4. To enable your device again, simply log into the Kevō app.