Geofencing in iOS

Description : This blog introduces you to use geofencing is iOS with in-build method of LocationManager. Geofencing uses global positioning system(GPS) to identify users geographical boundary. Now days geofencing would be too much useful in Internet of Things (IOT) application. As it can gives you position of user and also assigned some boundary with them. Geofencing is most accurate with WI-FI ON irrespective of it is connected to any network or not. Implentation : These are the 2 packages in objective c use to implement geofence : #import <Foundation/Foundation.h> #import <CoreLocation/CoreLocation.h> Which you can included inside LocationManager.  Now will consider one example to elaborate the implementation of geofence. Consider user is wanted to go to location A. At this point we can start or define boundary of user with location A. Support of this methods are above iOS 7.0 version.     if(![CLLocationManager locationServicesEnabled])     {         //You need to enable Location Services     }         CLLocationDegrees latitude = //Latitude of location A     CLLocationDegrees longitude =//Longitude of location A     CLLocationCoordinate2D centerCoordinate = CLLocationCoordinate2DMake(latitude, longitude);     CLLocationDistance regionRadius = //Radius as per your requirement but as per iOS suggestion it should be above 250-300 meter. NSString *identifierId = //Any unique value for geofence identifying.     CLRegion * region = nil;     if([version floatValue] >= 7.0f)      {         region =  [[CLCircularRegion alloc] initWithCenter:centerCoordinate                                              radius:regionRadius   identifier:identifierId];     }         [locationManagers startMonitoringForRegion:region];     After...