Est. Budget: $30.00
its just an browser application.While connecting to wifi, a prompt will appear where you have to give your mobile number. An otp will be sended to that number and after verifying the otp user can access the wifi.
Basically the concept is if you went to somewhere in restaurant and if you use there free wifi then it will ask for otp using my mobile number then you received one unique passward then only you can access wifi of ...