Srinagar, July 18 -- India is rapidly becoming one of the world's leading digital economies. We proudly speak of Artificial Intelligence, smart cities, digital governance, satellite technology, electric vehicles, and Industry 4.0. Today electricity is measured with smart meters, water consumption is digitally monitored, tolls are collected without stopping vehicles and financial transactions worth crores are completed within seconds through mobile phones. Yet, there is one daily transaction involving millions of citizens that still depends almost entirely on trust-the purchase of fuel.Every day people across the country visit petrol pumps with a lingering doubt in their minds: "Am I really getting the quantity of fuel that I have paid for...