Here’s an example from Mohammad Azam demonstrating usage of the Multipeer Connectivity API called EasyCards. The example shows how to set up and discover sessions, and transfer a resource (in this case a card) to those connected.
Here’s from the AzamSharp channel showing EasyCards in action:
You can find the EasyCards source code on Github here.
You can find out more about the Multipeer Connectivity API in WWDC 2013 Session 708.
A nice straightforward example on using the new Multipeer Connectivity API.