When a user enters a captive portal for the first time, user data is gathered and stored. This information is matched against the MAC address of the device accessing the captive portal.
The next time a user accesses the captive portal using this same credentials, they are authenticated immediately, since the device's MAC address is available within the controller, service platform or access point's database along with the requester's identification information. There's no need for additional credential validation after the initial credential verification.
To assign MAC Registration to a WLAN:
Use None to disallow use of MAC Registration with this WLAN. Select device to register a new MAC address. If a MAC address already exists, allow access. Select device-OTP to register a new MAC device and send a OTP (One Time Password) for validation. Select user to register a new user by sending them a registration code to the e-mail address or mobile phone number provided by the user at login.
Select Reset to revert to the last saved configuration.