This is a demo system that detects position of a device using QCAR instead of GPS or other location services.
This system doesn’t use GPS, and you can detect location of a device inside buildings.
We built this system in Global Android Dev Camp Kyoto .
You can get more information about this application.
NDK and QCAR SDK are required to build.
Can run an application build with Ruby on rails 2.8.3
(We run on Heroku bamboo-ree stack.)