Demonstrates CoreLocation fencing and ranging of iBeacons, BTLE devices enabled to aide iOS devices in determining a users proximity to a location rather than their position. In addition to demonstrating how to use CoreLocation's CLLocationManager APIs to monitor and range for these CLBeaconRegions, AirLocate also provides an example of how to calibrate and configure an iOS device as a beacon.
Multipeer Group Chat is an example application which builds on the Multipeer Connectivity framework for discovering, connecting, and sharing data between "nearby" peers. This application uses framework based UI for connecting to local peers and the framework convenience API for exhanging text messages and image resources between devices.
Reference example of an iOS library that uses the MultiPeer framework to automatically connect people - demonstrates simultaneous client browsing and advertising.