[TYPO3-english] OAuth2 callback URI, how to?

[Jurian Janssen]

Dear all, 

I'm trying to get into TYPO3 extensions. At the moment I need to authorize an app via OAuth in my extension. For this I need to provide a callback URI. I'm not really sure how to do this within typo.

Could somebody shed some light on where to place the script I want to be the callback and how to refer to it in TYPO3?

I read something about eID, but I couldn't find any good tutorials or examples on it.

Thanks.