Which two are supported captive or guest portal authentication methods?

FortiAuthenticator supports various captive or guest portal authentication methods, including social media login with Linkedln, Facebook, Twitter, Google+, or WeChat; email verification; SMS verification; voucher code; username and password; and MAC address bypass. Apple ID and Instagram are not supported as authentication methods. References: https://docs.fortinet.com/document/fortiauthenticator/6.4/administration-guide/372404/guest-management/372405/authentication-methods