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[quote author=James C4S link=topic=183580.msg1388166#msg1388166 date=1378951558]
Most public WiFi use a HTML/HTTP based login. That might be difficult to code.
i've never tried to connect to my wifi shield to a net like that, that's why i wanted to know more about it...
[/quote]
The WiFi shield is irrelevant. It doesn't have magic code that understands all the different ways someone could write an HTML login page. That's going to be up to you.