# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2012-10-04 16:52:39 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/253900451458723842) RT @hacx: iOS 6 developers -- note that using the old uniqueIdentifier will result in a string: "00000000-0000-0000-0000-000000000000"