QR code based navigation system for closed building using smart phones

Smart phones are widely used as navigation aid nowadays. Most of the smart phones provide a built-in Navigation or Map application with some sort of GPS capability. These navigation applications provide accurate navigation for outdoor location using GPS unit of the Smartphone. But providing an accurate navigation inside a closed building is still a challenge. Several solutions are available in the market for indoor navigation using Bluetooth, Wi-Fi and AGPS. But their reliability of navigation in all given scenarios is still a challenge. In this paper, we elicit a cost effective and 3D (latitude, longitude and altitude) smart phone solution which helps in indoor navigation with the help of QR codes [1]. QR codes are used in this context to provide location information to the user optically. QR codes will be used all across the building to carry the information required for the navigation system. The mobile application will use the QR codes to provide accurate indoor navigation for the user.