Well, Satellite did the actual head count at Kumbh (7/12)

On planning and administration at Kumbh

For proper planning and administration, Kumbh Mela organisers deployed the latest satellite technology to keep track the number of people visiting various sites of Kumbh Mela in real time.

A satellite was deployed specially for the purpose to count the headcount in Mela area, which can then be used for proper planning of logistics like bus and trains.

Technology institutions like Indian Institute of Technology (IIT) Roorkee, Moti Lal Nehru National Institute of Technology (MLNRT) and Indian Institution of Information Technology (IIIT), Prayagraj were involved along with with Google.