NGINX Controller

Confirmation api

Use a devices table to track connected devices

We (ab-)use two signup codes:

• The first for the authorization
• The second to store the "grant" for the device

For the device communication the plan is to have a call for the device
to register (for the firebase key), and then use username+password
initially before we get something oauthy going.

The app reports the notification_token

A better device confirmation not based on SignupCodes