Gareth just updated to confirm passcode-protected iOS devices are safe provided the thief or attacker does not have access to a computer which knows the passcode. One which hasn't synced that iOS device. Everyone needs to passcode and encrypt your iTunes backups. Plus put a password on your computer accounts. If possible encrypt your full drives. If you've got a Mac running Lion, turn on FileVault!
4/6/12 at 12:08pm