How to detect if in range of beacon ionic 3

BLE Beacons
1

Hello, I am following a sample code posted by Ionic 3 that implements IBeacons with Ionic 3. What I want to do now is display a message if I come close to the beacon specified. How would I go about that? This is what I see in my console and here is my code.
beacon

import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import { IBeacon } from '@ionic-native/ibeacon';
@Component({
  selector: 'page-about',
  templateUrl: 'about.html'
})

export class AboutPage {
 
  constructor(public navCtrl: NavController, private ibeacon: IBeacon) {}
  
    // Request permission to use location on iOS
    scan(){
// create a new delegate and register it with the native layer
let delegate = this.ibeacon.Delegate();

// Subscribe to some of the delegate's event handlers
delegate.didRangeBeaconsInRegion()
  .subscribe(
    data => console.log('didRangeBeaconsInRegion: ', data),
    error => console.error()
  );
delegate.didStartMonitoringForRegion()
  .subscribe(
    data => console.log('didStartMonitoringForRegion: ', data),
    error => console.error()
  );
delegate.didEnterRegion()
  .subscribe(
    data => {
      console.log('didEnterRegion: ', data);
    }
  );

let beaconRegion = this.ibeacon.BeaconRegion('',''); // left blank because I didn't want to put my information

this.ibeacon.startMonitoringForRegion(beaconRegion)
  .then(
    () => console.log('Native layer received the request to monitoring'),
    error => console.error('Native layer failed to begin monitoring: ', error)
  );
    }
  
}