I have a website where authentication is done through a web form.
I would like users of the app to be able to log in and register to the site from the app.
Will I have to create a RESTful webservice for the authentication and registration services? Should I create an Oauth webservice? Or is there a simpler way I have overlooked? Also would it be possible to log in is only done once to persist the lifetime of the app, unless user clicks log out?