How are the people coming to Mahakumbh being counted with AI cameras? see

Mahakumbh is being organized in Prayagraj, UP. Figures are being given that more than 7 crore devotees have reached Mahakumbh so far. The question is, how were these crores of devotees counted? ADM of fair area Vivek Chaturvedi had a special conversation with Aaj Tak regarding this. Watch the interview.