I've been waiting to see what they come up with. It's going to be interesting to see what the security experts think of this once they've had a chance to delve into it (i.e. it's all Apple says it is).
http://9to5mac.com/2012/09/13/apple...arent-non-personal-udid-replacement-in-ios-6/
Apple has shared some more information about its new Advertising Identifier which will be used to replace the UDID (unique device identifier) in iOS 6.
iOS 6 introduces the Advertising Identifier, a non-permanent, non-personal, device identifier, that advertising networks will use to give you more control over advertisers' ability to use tracking methods. If you choose to limit ad tracking, advertising networks using the Advertising Identifier may no longer gather information to serve you targeted ads. In the future all advertising networks will be required to use the Advertising Identifier. However, until advertising networks transition to using the Advertising Identifier you may still receive targeted ads from other networks.
http://9to5mac.com/2012/09/13/apple...arent-non-personal-udid-replacement-in-ios-6/