Can I uniquely identify a device in Windows 10/Windows 8/WinRT

Question

Is there any mechanism to identify a device uniquely (even if it is anonymous)?

To be clear, by \"device\" I mean the computer/slate/pc.

Windows 8.x

Answer 1

Such an ability has just been added in Windows 8 RTM:

Windows.System.Profile.HardwareIdentification.GetPackageSpecificToken(null)