Introduction to ibeacontm

Transcription

1 Introduction to ibeacontm Robb Sabolovic 04/24/2014 Redmond, WA Xcoders Meeting ibeacontm is Apple trademark covering location and proximity detection technology.

2 Agenda Introduction to ibeacontm Technology ibeacontm HW and Communication understanding ibeacontm application use cases open discussion. ios 7.0+ CoreLocation ibeacontm integration Questions / Demos

3 ibeacontm is the Apple Trademark for an indoor positioning system that Apple Inc. calls "a new class of lowpowered, low-cost transmitters that can notify nearby ios 7 devices of their presence." What is ibeacon

4 What is behind ibeacon Bluetooth Low Energy (part of the new Bluetooth 4.0 or Bluetooth Smart standard) make ibeacon possible. Any device supporting Bluetooth 4.0 and beyond can be an ibeacon transmitter. However since ibeacon uses uni-directional non-connected advertisement packet transmission, extremely simple very low cost and low power devices can also be an ibeacon broadcasting device. GATT = Generic Attribute Profile ATT = Attribute Profile L2CAP = Logic Link Control and Adaptation Protocol

5 ibeacon Broadcast Events During one broadcast event, the message is be sent on three different Bluetooth low energy dedicated advertisement channels 37(2.402GHz), 38(2.426GHz) and 39(2.480GHz). Broadcast Interval is targeted at 100ms. Delay is a pseudorandom delay up to 10ms Device sleeps (<1uA) between the events.

6 ibeacon Packet Content Preamble (1 byte) Access Address (4 bytes) PDU (2-39 bytes) CRC (3 bytes) 0x8E89BED6 Header (2 bytes) MAC Address (6 bytes) Data (up to 31 bytes) values values ibeacon Prefix (9 bytes) Proximity UUID (16 bytes) Major (2 bytes) Minor (2 bytes) TX Power (2 bytes) ibeacon Prefix (Fixed) A FF 4C TX Power 2 s complement of measured TX

7 ibeacon Ranging One of the keys to ibeacon is the ability to range a device. ranging that enables location based user interaction. Immediate = few cm Near = few meters Far = ~10m Unknown = Out to ~70m Immediate Near It is this Far Unknown

8 ibeacontm Broadcast Devices

9 Bluetooth Smart Beacon Interactions Given that we now know our proximity to a given point we can now offer something in relation to this point Not only this is where you are but also this is what you can do The relative proximity to a beacon can trigger: Open an app and/or perform a specific action within an app Push specific content to a user who opt-in

10 Phones as Smart Beacons Listening for beacons can enable twist to our concepts Still within micro-locationing / interaction Trigger actions based on your vicinity Turn on/off lights Lock/open computers Pre-payment of tickets / merchandise Etc. Beacon scanners can Keep track of phones in vicinity

11 Use Case - Retail Consumer Special promotions Personal messages Recommendations Automatic check-in Retailer Monitoring shopping behavior Advertisement Simplify payment handling Data collection

12 Cloud service Beacon management Access information on user Push segmented information Security / Beacon validation Use Case - Retail

13 Use Case - Asset Tracking

14 CoreLocation ibeacon Integration Overview The Core Location framework lets you determine the current location or heading associated with a device. The framework uses the available hardware to determine the user s position and heading. You use the classes and protocols in this framework to configure and schedule the delivery of location and heading events. You can also use it to define geographic regions and monitor when the user crosses the boundaries of those regions. In ios, you can also define a region around a Bluetooth beacon. Class References CLBeacon CLBeaconRegion CLCircularRegion CLGeocoder CLHeading CLLocation CLLocationManager CLPlacemark CLRegion

15 CLBeaconRegion Overview A CLBeaconRegion object defines a type of region that is based on the device s proximity to a Bluetooth beacon, as opposed to a geographic location. A beacon region looks for devices whose identifying information matches the information you provide. When that device comes in range, the region triggers the delivery of an appropriate notification. Specifying a Beacon s Identity You identify beacons using a combination of three values: The proximityuuid property contains the identifier that you use to identify your company s beacons. You typically generate only one UUID for your company s beacons but can generate more as needed. You generate this value using the uuidgen command-line tool. The major property contains a value that can be used to group related sets of beacons. For example, a department store might assign the same major value for all of the beacons on the same floor. The minor property specifies the individual beacon within a group. For example, for a group of beacons on the same floor of a department store, this value might be assigned to a beacon in a particular section

16 CLBeacon Overview The CLBeacon class represents a beacon that was encountered during region monitoring. You do not create instances of this class directly. The location manager object reports encountered beacons to its associated delegate object. You can use the information in a beacon object to identify which beacon was encountered. The identity of a beacon is defined by its proximityuuid, major, and minor properties. These values are coded into the beacon itself. Tasks Identifying the Beacon proximityuuid property major property minor property Determining the Beacon Distance proximity property accuracy property rssi property

17 CLLocationManager Overview The CLLocationManager class defines the interface for configuring the delivery of location- and heading-related events to your application. You use an instance of this class to establish the parameters that determine when location and heading events should be delivered and to start and stop the actual delivery of those events. You can also use a location manager object to retrieve the most recent location and heading data. A location manager object provides support for the following location-related activities: Tracking large or small changes in the user s current location with a configurable degree of accuracy. Reporting heading changes from the onboard compass. (ios only) Monitoring distinct regions of interest and generating location events when the user enters or leaves those regions. Deferring the delivery of location updates while the app is in the background. (ios 6 and later only) Reporting the range to nearby beacons. Some location services require the presence of specific hardware on the given device. For example, heading information is available only for devices that contain a hardware compass. This class defines several methods that you can use to determine which services are currently available.

18 ibeaconsimple Xcode Example Demo New Project

19 ibeaconsimple Xcode Example Demo Linked Frameworks CoreLocation and CoreBluetooth Frameworks are necessary for running an ibeacon application

20 ibeaconsimple Xcode Example Demo StoryBoard

21 #import <UIKit/UIKit.h> #import <CoreLocation/CoreLocation.h> #import <CoreBluetooth/CoreBluetooth.h> #import <AudioToolbox/AudioToolbox.h> ibeaconsimple Xcode Example Demo (strong, nonatomic) CLLocationManager (strong, nonatomic) CLBeaconRegion (weak, nonatomic) IBOutlet UILabel (weak, nonatomic) IBOutlet UILabel (weak, nonatomic) IBOutlet UILabel (weak, nonatomic) IBOutlet UILabel (weak, nonatomic) IBOutlet UILabel (weak, nonatomic) IBOutlet ViewController : UIViewController <CLLocationManagerDelegate>

22 #import ViewController - (void)viewdidload { [super viewdidload]; ibeaconsimple Xcode Example Demo ViewController.m // Initialize our location manager and set ourselves as delegate self.locationmanager = [[CLLocationManager alloc] init]; self.locationmanager.delegate = self; // Create UUID with the same UUID as Broadcasting Device NSUUID *uuid = [[NSUUID alloc] initwithuuidstring:@"e2c56db5-dffb-48d2-b060-d0f5a "]; NSUInteger mymajor = 1; // Set Region to cover only one Major value within the defined UUID space self.beaconregion = [[CLBeaconRegion alloc] initwithproximityuuid: uuid major: mymajor [self.locationmanager startmonitoringforregion:self.beaconregion]; } - (void)locationmanager:(cllocationmanager*)manager didenterregion:(clregion*)region { // Start Ranging of UUID based Region [self.locationmanager startrangingbeaconsinregion:self.beaconregion]; }...

23 ibeaconsimple Xcode Example Demo ViewController.m Continued... -(void)locationmanager:(cllocationmanager*)manager didrangebeacons:(nsarray*)beacons inregion:(clbeaconregion*)region { CLBeacon *beacon = [[CLBeacon alloc] init]; beacon = [beacons lastobject]; self.statelabel.text found"; self.majorlabel.text = [NSString stringwithformat:@"major: %@", beacon.major]; self.minorlabel.text = [NSString stringwithformat:@"minor: %@", beacon.minor]; self.rssilabel.text = [NSString stringwithformat:@"rssi: %li", (long)beacon.rssi]; self.distancelabel.text = [NSString stringwithformat:@"distance: %f meters", (double)beacon.accuracy]; } if (beacon.proximity == CLProximityUnknown) { self.proximitylabel.text Unknown"; self.majorlabel.text self.minorlabel.text self.rssilabel.text self.distancelabel.text } else if (beacon.proximity == CLProximityImmediate) { AudioServicesPlayAlertSound(kSystemSoundID_Vibrate); self.proximitylabel.text Immediate"; } else if (beacon.proximity == CLProximityNear) { self.proximitylabel.text Near"; } else if (beacon.proximity == CLProximityFar) { self.proximitylabel.text Far"; }

24 ibeaconsimple Xcode Example Demo ViewController.m Continued... -(void)locationmanager:(cllocationmanager*)manager didexitregion:(clregion*)region { // Stop Ranging of beaconregion Region based detection still active [self.locationmanager stoprangingbeaconsinregion:self.beaconregion]; } // Clear out values when Beacon is gone self.statelabel.text gone"; self.majorlabel.text self.minorlabel.text self.proximitylabel.text "; self.rssilabel.text self.distancelabel.text - (void)didreceivememorywarning { [super didreceivememorywarning]; // Dispose of any resources that can be recreated.

25 ibeaconsimple Demo Application Operation

26 Other ibeacon Demos Proximity Triggered Actions Open Safari Website when Ranging = Immediate

27 Other ibeacon Demos Background Notification Actions

28 Thanks for your participation Reference Links: TI Low-cost Broadcaster Reference Design TI SensorTag Hardware CoreLocation Framework (developer.apple.com) AirLocate Demo Code (developer.apple.com)