It seems like a lot of this heavy lifting is left to api / backend implementors and is not explicitly addressed. I don't think that is a short-coming of the module but perhaps some additional documentation on best practices could be helpful.
@pingburg @filearts You are right, unique account validation and error handling belong to the server. What Satellizer can do is catch an error through the $auth.authenticate().catch() promise and display it to the user. I will definitely update the documention very soon. The README of https://github.com/sahat/hackathon-starter
could fit on a screen when I first posted it on Hacker News earlier this year; it is now 1300+ lines long.
