As of IOS 7, one that need a unique ID for an installment, need to use “identifierForVendor” with B4I it should be done like that:
Dim device As NativeObject
device = device.Initialize("UIDevice").RunMethod("currentDevice", Null)
Caution the identifierForVendor value will change if your user reinstall all of your apps ( the identifier is computed using the 2 first parts of your appId.
If your Appid is org.nopapers.myApp then identifier is computed using†org.nopapers.