I just started facing this issue with the iOS 10 GM release. I received an email saying:
To process your delivery, the following issues must be corrected:
This app attempts to access privacy-sensitive data without a usage description. The app's Info.plist must contain an NSCameraUsageDescription key with a string value explaining to the user how the app uses this data.
Once the required corrections have been made, you can then redeliver the corrected binary.
The App Store team
I am using google GoogleSignIn. I am not using Firebase, but when installing GoogleSignIn with cocoa pods, I saw in the logs it automatically installed Firebase.
Is there something we can do other than having to define these keys as my app has nothing to do with camera / photos etc and hence I don't want users to think we are using them.
I notice someone else has also faced this issue: https://forums.developer.apple.com/thread/62229