Of course, but there have been security flaws in the past that allowed you to easily remove a pin or passphrase.
I'm just nervous about saving my "home" address. Your car has keys, but you're still advised not to save your home address under "Home" on your satnav. It's the same thing.
Hm, there are some provisions in the secure keychain that supposedly encrypt keychain data with the pin/passphrase. Wonder if those lockscreen bypass flaws affect that? (Google "kSecAttrAccessibleWhenUnlocked" for a start)
UK law allows me to carry only the license part and leave the paper part at home. In the event that I should be required to produce it, I am allowed four days to take it to my local police station.
I'm just nervous about saving my "home" address. Your car has keys, but you're still advised not to save your home address under "Home" on your satnav. It's the same thing.