Apple's latest iOS brings enhanced location services to your iPhone. So enhanced that some apps make it seem a little bit scary at just how well they're tracking you, even when the app isn't running—but it's a good thing! Right?
Updated location features in iOS mean that apps like Foursquare and Apple's own Reminders can notify you when you enter or leave a geographic region. For instance, Foursquare's new feature Radar will pop up a notification when you're near a location—or people—that Foursquare thinks might be of interest to you. How? An updated Core Location feature, Region Monitoring.