its just an browser [login to view URL] 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.\r\n\r\nBasically 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 that restaurant.\r\n\r\n\r\nIt is a client-sever for generationg & verification of otp and disabling and enabling the dhcp\r\n\r\nFirst of all Dhcp has to be closed. on client side user has to enter is mobile number. Mobile number will be sended to the server side where it will generate the otp and send by using any free msg gateway(like okezi). Again on client side user will input the otp and then verfication will be done on the server side and dhcp will be enable by sending a unique ip address to each mac-addresses,after all this the user can access the shared wifi.