About authentication of xPico200 series.

When we intend to connect to Free Wi-Fi access (Hotel or Free Wi-FI spot) , we think that below two steps.
  1. Connect to access point and need authentication
  2. Need to log in to server.

In case of using xPico200, above step 1 is easy step. Standard firmware has this function. But it is difficult to implement to support above step two authentication.

Do you have any experience to support above authentications?