I haven’t needed to get a unique device ID since before we stopped being able to use -[UIDevice uniqueIdentifier] until today. Apple added the method -[UIDevice identifierForVendor] in iOS 6 which totally replaces the old method for any of my needs.
What the method does is give a unique ID for any apps from the same vendor on a given device. The part which might be a little confusing at first is that “vendor” does not mean the same developer account, but instead means any apps where the first part of the bundle identifier (CFBundleIdentifier) is the same. So com.collindonnell.myapp and com.collindonnell.myotherapp would get the same identifier, but com.albinadevelopment.anyapp would not.
