Right now I am developing a Web-based Application, where the User has to login first.

When I open the Page by iPhone Safari, login and restart Safari, I am still logged in (Cookie & Session ID still set).

But when I add this Page with "Add to Home Screen", each Time i click the Icon for that page, I have to login again.

I did not find any information about that. What can I do so my users can set this page to their home screen
as icon and still don't have to login each time they open it?