Get UID from multiple cards (Anticollision)

[Micael Skovmark]

Hi Guys,

I'm struggeling. I can't find out how to read multiple cards placed on the reader at once.
I'm using WinSCard in C#.
I can go through to get a UID of one of the cards.
Then i suspect i need to HLTA this card, and then try again.
But i get the same UID for each try.

I can get from:
SmartCard.SCardConnect(hContext, readerName, 2, 3, ref phCard, ref ActiveProtocol);
TransmitAPDU(phCard, APDU, out UID);
- The APDU is: { 0xFF, 0xCA, 0x00, 0x00, 0x00 }

And then i'm not 100% sure what to do. I have tried:
Anticollision 1: { 0xFF, 0x68, 0x0E, 0x03, 0x0C, 0x0A, 0x00, 0x00, 0x0A, 0x58, 0x70, 0x00, 0x00, 0x00, 0x00, 0x93, 0x20, 0xFE }
Anticollision 2: { 0xFF, 0x68, 0x0E, 0x03, 0x11, 0x0F, 0x00, 0x00, 0x0A, 0x58, 0x70, 0x00, 0x00, 0x00, 0x00, 0x93, 0x70, 0x26, 0x5C, 0x40, 0x4A, 0x70, 0xFE }
HLTA: { 0xFF, 0x68, 0x0E, 0x03, 0x0C, 0x0B, 0x00, 0x00, 0x00, 0x34, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x50, 0x00, 0xFE }
REQA: { 0xFF, 0x68, 0x0E, 0x03, 0x0B, 0x0A, 0x07, 0x00, 0x10, 0x8D, 0x80, 0x00, 0x00, 0x00, 0x00, 0x26, 0xFE }
And then GETUID again: { 0xFF, 0xCA, 0x00, 0x00, 0x00 }

But i keep getting the same uid.
What am i missing? Or am i just totally in the wrong direction?

Thanks for any pointers.

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[TapLinx Support]

Hi Micael,

Sorry, I cannot give you any help in C# programming the PC/SC interface. Only general questions to use MIFARE products.

Please have a look to this site:

http://www.nxp.com/support

Regards,
The TapLinx team

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