Boot straight to an Application when Mac is turned on I have a client who wants to use Mac OS X and a Mac Mini to sell a software solution to end users that ALWAYS boots straight to an application when the Mac is turned on. They can't access the login screen, desktop or anywhere else (in fact they should NEVER even see it.) the only thing they would see is the grey apple screen on boot up.

That being said, we'd also need someway of being able to get at the desktop and the rest of OS X for an Admin person (my client or myself).

I've looked around, and everything seems to either be focused on a kiosk web browser or booting to desktop and then launching the application... both of which are NOT what the client wants to happen!

Any ideas on how best to accomplish this action?
See This Apple Tech Note on creating a kiosk type UI in OS X. Be careful you configure a way to boot normally, in case of mis-configuration, application starts hanging, etc.