Tollmate is a solution for toll plaza payment process.
It uses GPS based positioning to monitor and make the payment when the drive is sliding the icon to pay.
The android app is a client-side app which is used to send a request to the database for automation of toll plaza payment process.
Parallelly when the user drags and drops the icon, the apps is made to run in the background and the continuous data transmission of the present location (latitude and longitude) is sent to the database to process it.