This coding tutorial shows how to develop a login screen for the iPhone. I walk through the complete process of creating and designing a basic iPhone screen. Concepts include the Xcode IDE, Objective C, the iPhone Cocoa UI SDK, Controllers, Outlets, and more.

My interest in mobile platforms lately has turned to disappointment. I'm quickly realizing that the technologies are in a state of disarray, and far more nascent than the commercials on TV would have you believe. Very little is ready for primetime, which is a huge headache for developers and users alike.

How to manage mobile user accounts, and verify that a user's phone number belongs to them.