"They will be monitoring whether toilets are functional, whether they are being used, hand washing is being done or not and other activities related to sanitation via the app," S. N. Dave, WASH specialist, UNICEF, told the media here.

The app will help in co-ordinating activities between the district magistrate, school authorities and the state government. "The information will be fed to a server and will be available on a real-time basis. The information from grassroot will be conveyed to the state," he said.

Developed by the Administrative Staff College of India, Hyderabad, the app-based campaign is being spearheaded by UNICEF in collaboration with the Bengal government in the state, the official said.

"It was launched in Andhra Pradesh and next launch is in Bengal. Later on, it will go to other states. It's a state initiative," Dave said, adding a budget of Rs 20-22 lakh has been earmarked for Malda district to introduce the service.

Dave was speaking on the sidelines of the launch of the state protocol for declaration, verification and certification of villages/gram panchayats/blocks and districts as open defecation free.