FitBit WebAPI Authentication from Companion - Callback URL?

[ChrisPerko]

I have a question about the web api.  I'm trying to get a list of the user's friends, and I understand that I need to authenticate against the FitBit oauth.

When registering an app, it asks for a callback URL.  How does this work if it is the device companion requesting authorization instead of an outside web app?  What do I put here?

[ChrisPerko · Accepted solution]

I think this sample app answered my questions:

https://github.com/Fitbit/sdk-oauth