How to read the serial number of a SD Card ?

[chrkon]

Hello everybody,

I try to read the serial number of a SD Card (pluged into a Card Reader)
with Windows XP on a normal desktop PC.
I use WMI Query "CIM_PhysicalMedia" and get the "Tag" Property
(\\\\.\\PHYSICALDRIVE0 ... 5) and the "Serial Number" Property for each
drive. But only on the HDD the serial number string is filled! All drives in
the CardReader return an empty serial number string.

Even in the "WMI Object Broser" from Microsoft this property is empty, so I
don't think it is an error in my program.

Have anybody an Idea how I can read the SD Card ID?

Kind regards,
Christof