QuickBlox Messages UDIDs

Question

I'm using QuickBlox for Apple Push Notification Services, while debugging some problems I had a look at their QuickBlox panel:Messages->Devices and I notice there are multiple devices for some users with different UDIDs. These users have only used one device and none of the device UDIDs seem to tie in with the actual iPhone UDIDs as seen on iTunes.

Does anyone know where these UDIDs come from, what they signify and why there are more than one per user?

Answer 1

Apps are not allowed to access the device UDID.

The API for accessing a unique identifier for each device will return a new random ID if you uninstall then reinstall the app.

This is specifically designed to make it impossible for an app to track users of the app.

You must ask the user to type in their email or something, if you want to tell one user from another.