since iOS 6, we used the mac address of the iPhone to create a device unique ID for our app. It doesn't matter if you reinstall our app or the whole iOS, you would always get the same device ID on the same phone.
On iOS 7, however, this changed. It is not possible to access the mac address anymore. My question is: Is there another way in creating a unique ID for each device that is based on a unique hardware number?
I'm aware of the UIDevice Class Reference. The problem with it, is that it will return a new ID after the app has been reinstalled.
Thanks.