From the test application applications with handset on Windows Phone 8 system can show the position coordinates of their own or friends add a friend with QR-code, which can be used to scan the actual work.
After testing the application with the handset on Windows Phone 8 to view the location coordinates or their friends made friends with a scan QR-code, which can be used practically.
From a usability test applications with a mobile phone on the system Windows Phone 8 can see the coordinates of their friends who add friends with scanning. QR-code which can actually works.