To help ensure that apps continue to run smoothly, Facebook is providing tips to developers for how to handle situations in which users decline to grant access to their data. One tip: If a user has declined access to, say, their email address, but that information would help the app work better, just ask for it again later.
"We recommend doing this after a person has had some time to familiarize themselves with your app, so they have a better understanding of how the permission will improve their experience," Facebook says in its tips, which it published online.
So, feel free to say "no" to handing over certain data while logging in. But in the case of insistent apps, be ready to continue saying "no."
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