Published on November 20, 2013
Geofences & iBeacons Alejandro Rupérez Programmer Analyst (Research & Development) email@example.com
Geofence • A geofence is a virtual perimeter or barrier for real-world geographic areas. • A geofence could be dynamically generated as in a radius around a point location.
Geofence • When the location-aware device of a location-based service (LBS) user enters or exits a geofence, the device receives a generated notiﬁcation.
iBeacon • "A new class of low-powered, low-cost transmitters that can notify nearby iOS 7 devices of their presence." - Apple Inc.
iBeacon • Works on Low Energy Bluetooth (BLE), also known as Bluetooth 4.0 or Bluetooth Smart. • iBeacons has endless possibilities like indoor positioning systems or social media check-ins.
Example • When the user enters in the shopping center’s geofence, the application is set to hear the iBeacons with their ProximityUUID (Universally unique identiﬁer).
Example • We can detect and triangulate the user's position within the shopping center placing several iBeacons with the same identiﬁer ProximityUUID and a major identiﬁer for each store.
Example • We can also detect and triangulate the user's position within the store placing several iBeacons with the same identiﬁer ProximityUUID, the store’s major identiﬁer and minor identiﬁers for each section.
Example • We can detect when the user approaches or moves away from a section for advertising or offers. • We can generate a payment area where you can pay with the phone without having to put the phone close to a NFC device.
How to implement this on iOS devices?
iOS Implementation • Add the CoreLocation.framework • Implement the protocol CLLocationManagerDelegate. • Create a CLLocationManager instance and set the delegate.
iOS Implementation • CLRegion *region = [[CLRegion alloc] initCircularRegionWithCenter:CLLocation Coordinate2DMake(40.44699, -3.58719) radius:150 identiﬁer:@"Shopping Center Geofence"];
iOS Implementation • [locationManager startMonitoringForRegion:region];
iOS Implementation • - (void)locationManager: (CLLocationManager *)manager didEnterRegion:(CLRegion *)region • - (void)locationManager: (CLLocationManager *)manager didExitRegion:(CLRegion *)region
iOS Implementation • CLBeaconRegion *beaconRegion = [[CLBeaconRegion alloc] initWithProximityUUID:[[NSUUID alloc] initWithUUIDString:@"01234567-89ABCDEF-FEDC-BA9876543210"] identiﬁer:@"Shopping Center iBeacons"];
iOS Implementation • [locationManager startRangingBeaconsInRegion: beaconRegion];
iOS Implementation • - (void)locationManager: (CLLocationManager *)manager didRangeBeacons:(NSArray *)beacons inRegion:(CLBeaconRegion *)region • The beacons NSArray contains detected iBeacons in CLBeacon objects.
• iOS Implementation CLBeacon Class Reference: • • • • proximityUUID • accuracy (The accuracy of the proximity value, measured in meters from the beacon.) • rssi (The received signal strength of the beacon, measured in decibels.) major minor proximity (The relative distance to the beacon: Immediate, Near, Far or Unknown.)
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