Mifare 7 Byte UID to 4 Byte UID Conversion

[alikoker]

Hello,
I'm working on an application that required reading the Mifare card serial number. But MF7 sends 7 byte data.
Is there a code or algorithm for converting 7 byte UID to 4 byte UID? (AEB3D6E5EDDD6D --> F23ACBD2)
I want to write a Windows program for converting this UID's.

4 Byte Data (Received from Gigatek - Promag PCR310 USB Reader)
HEX: [F2 3A CB D2]
DEC: [4063939538]
BIN: [11110010 00111010 11001011 11010010]

7 Byte Data (Received from Gigatek - Promag MF7-20 RS232 Reader)
HEX: [AE B3 D6 E5 ED DD 6D]
DEC: [49174381509598573]
BIN: [10101110 10110011 11010110 11100101 11101101 11011101 01101101]

Thanks...
Muhammed Ali Köker

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[yousufmaher]

Hello Ali,

I am a new bee. Can you please guide me how you read that UID from PCR310. In .net, on "DataReceived" event it is just sending a fix number of bytes for each card.

Where as for your question may be this link will help you.

http://stackoverflow.com/questions/17174621/coordinate-id-of-same-card-that-is-read-by-two-different-card-readers

Thanks,
M. Yousuf Maher

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