iOS skip permission dialog on startup

Is there a way to skip the iOS permission dialog on startup of Unity3d application? I need to ask for the permission only when it is really needed.

I need camera permission, but only when user wants to access certain part of the application.

I found that you can use meta-data for Android.

<meta-data android:name="unityplayer.SkipPermissionsDialog" android:value="true" />

Is there something simmilar I can use on iOS?

Thanks.