My (very short) experience with startMonitoringForRegion method

Since iOS 4.0 there is cool method in CoreLocation framework:

– (void)startMonitoringForRegion:(CLRegion *)region desiredAccuracy:(CLLocationAccuracy)accuracy

that can send events (even while application is in background) when phone is entering or leaving specified area.

But there are two “small” disadvantages:

1) Works only on iphone 4 and newer
2) It’s based on cell position (not GPS!) so accuracy is about houndreds of meters

Could be so beautiful.. :)