For this project, except for a GPS-enabled mobile phone to record GPS NMEA sentences, no hardware is required. I used an Android phone, and several applications are available in the Play Store which will allow you to record NMEA sentences either in the “.txt” or in the “.log” format. Since not all users have access to an Android phone, I have attached two sets of GPS sentences to allow you to complete this project. Since no GPS signal could be obtained indoors, the first set of GPS sentences were recorded by walking for approximately 100 metres outdoors. The second set of GPS sentences were recorded indoors for a no GPS signal condition. The only other hardware that is needed is a Host PC. For this project, I used a HP Pavilion G6 series laptop with an Intel 2.1GHz processor and 3 GB RAM running Windows 7 Home Basic 64-bit OS.