I just started with my app last week and recently encountered a problem. I'm making something like an email aggregator using Yahoo! Mail Web Service (http://developer.yahoo.com/mail/docs/user_guide/GettingStarted.html) using php and code igniter.
I got the whole basic authentication working based on the sample php codes in the quickstart; I can now get the folder list and emails and so on. However, I need to make this service available for old wap phones. With other oauth providers, facebook for instance, I need to specify that my display type is wap in my app registration, and the user authentication will be a wap version of the site. The curls are made in php so there are no problems with headers but my problem is the user login and authorization; they are in html format and are not rendered by wap browsers. Is there a way to let users authenticate in wap?