[Question] Why does Mapbox try to use CoreMotion?

[iafan]

When compiling default iOS examples, I noticed that Xcode gives the following warning:

{"msg":"#Warning Error reading file", "file":"\/\/private\/var\/Managed Preferences\/mobile\/com.apple.CoreMotion.plist", "error":"Error Domain=NSCocoaErrorDomain Code=257 \"The file “com.apple.CoreMotion.plist” couldn’t be opened because you don’t have permission to view it.\" UserInfo={NSFilePath=\/\/private\/var\/Managed Preferences\/mobile\/com.apple.CoreMotion.plist, NSURL=file:\/\/\/\/private\/var\/Managed%20Preferences\/mobile\/com.apple.CoreMotion.plist, NSUnderlyingError=0x103048c90 {Error Domain=NSPOSIXErrorDomain Code=1 \"Operation not permitted\"}}"}

which indicates that CoreMotion capability is not present.

This can be fixed by adding this capability to info.plist, like this:

	<key>NSMotionUsageDescription</key>
	<string>This app uses motion data to [... insert your explanation here ...]</string>

But I wonder if it's actually needed by MapBox (and if it is, should this capability be included in all examples with some reasonable description)?