Is Continuous Integration feasible for iOS development?

Is Continuous Integration feasible for iOS.
Again my Jenkins build fails with “Your session has expired. Please log in.” and I begin to ask myself if Continuous Integration is at all feasible for iOS develoment.


How can you set up a reliable unattended build system that demands a user logged into some web service which might expire your login at any moment? As far as I see it the answer is: You can't.


It's just not possible. It will always be an unreliable system wich will stop building for no apparent reason.


Or am I missing something?