Generating a unique Device ID for iOS app

In the MACH Registrations API, you are required to submit a parameter value called 'DeviceUID' which is supposed to be unique for each user of an iOS app. 

For before iOS7, there is a fantastic and free library already available to solve this (released under an MIT license)


For iOS7, please use the identifierForVendor method as described in this link:\_Class/Reference/UIDevice.html



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