iPhone Login Screen Concept ( Check Out the Full Animation! )

I tried to create a login screen which is clean and realistic. So here comes the concept: the login screen is a sliding window with an ID badge and a handle. After users inputing username/password and signing in, the window will slide up and show the main screen behind. Be sure to check out the full animation and let me know what you think! :)

Full Preview: http://cl.ly/9Ugg
Full Animation: http://cl.ly/9UEJ