I am developing and app and would like to know if there is any way that I can access the device's UDID from within the app. The reason being the app sends data to an SQL database and I would like to know which device sends it.
Edit: I have just read that Apple have banned this practice. Is there an alternative?
You should use +[UIDevice identifierForVendor] available from iOS 6.0. It provides an unique idenfier for all the apps from the same vendor (provided the user doesn’t uninstall all of them).