Question: During my app review I received the following:
"17.2: Apps that require users to share personal information, such as email address and date of birth, in order to function will be rejected

Specifically, your app uses Facebook login for authentication purposes only, but does not include account-based features offered by that site, which is not allowed on the App Store.

In order for Facebook to be the only authentication mechanism available, your app must include significant account-specific functionality from Facebook. Pulling profile information, or sharing are not sufficient account-based features for Facebook to be the only authentication mechanism available. 

It would be appropriate to implement your own authentication mechanism, or implement significant account-specific functionality from Facebook."

**My Question:**
What are some examples of "significant account-specific functionality from Facebook"?

Would allowing users to choose pictures from their Facebook for their profile, or displaying mutual friends using my app pass this requirement?

**\*Note:** I'm building a dating app kind of like Tinder

Thanks!

Answer: 
If you are going to use Facebook log in, apple wants you to use significant account-specific functionality. This means that you should use things from Facebook like user interest or friend list. Using the user name profile pictures are not considered account specific functionality. Apple is saying if you are not using these information then you are not supposed to use Facebook authentication. You have 2 solutions here: 

1. Use the significant account-specific functionality from Facebook ex. interests of friend list.
2. Apple will accept the use Facebook log in without significant account-specific functionality if you also add your own login and password.

Tender app is using only Facebook log in and it is not rejected because tinder uses your friends list and interest from Facebook. If you can point to apple how you are using information like this they will accept your app.

I am sure of this information because I got it from apple review team member today!
Other authentication means, provide features that user can be able to sign up using his email id. What I understood from above is you have used only fb authentication.