In some project, We need to have link between Arduino board and Android/ios mobile application and a web site. These platforms must exchange data for a specific purpose. For example, Arduino board can collect data from its sensors, Then mobile application read data from Arduino and show these data to the user. We can have a website that shows collected data on the internet for other users.
ARDUINO Code and Phonegap app code and website code are available in this project.
This code has a document (50 pages) which describes the algorithm in detail.