Can I access the keychain on the iPhone?
Solution 1:
One other thing to note: the keychain APIs don't work in the simulator when using older versions (2.x, 3.x) of the iPhone SDK. This could save you a lot of frustration when testing!
Solution 2:
There is a keychain you can use - for code, the best bet is to check out the GenericKeychain sample application from Apple:
GenericKeychain sample