I was reading a long list of new OS 4 features that was separated into sections, and under the "Settings" section it had two features of great interest to me: (1) password lock (2) 4 digit pin lock Does this mean that we'll be able to set up passwords/pins to protect the settings menu only? I would love this feature. I pay for MobileMe so I always feel like I'm wasting the Find My iPhone security if someone can take my phone and simply turn it off to turn off my ability to find and wipe the phone. However, I also hate having to enter a 4 digit pin every time I want to use the phone at all. Pin protection of the settings menu and maybe of (un)installing apps and syncing the phone with iTunes would be all that I could want.