On 12/22/11 4:50 PM, 吴明 wrote: > Thanks > I will use the UUID or DeviceID instead of the phone number.
The device ID (UIDevice's -uniqueIdentifier) is deprecated in iOS 5. Don't use it. (As you can probably gather, Apple is rightfully keen on preventing developers from trying to track users in non-anonymized ways.) CFUUID is fine, but keep in mind that if you are storing it in NSUserDefaults then this presumably is not actually device-specific but app-specific, in the sense that a backup-and-restore ought to preserve the NSUserDefaults database across devices (say, if the user upgrades from an older iPhone to a newer one). Now, you haven't said *why* you are doing all this. I can't think of a good reason why you would need a true device identifier in your application, so hopefully the above caveat won't affect you. If you would like, perhaps you can elaborate on your goal? -- Conrad Shultz Synthetiq Solutions www.synthetiqsolutions.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
