uid changable S50 card Chinese Magic card
It is used as a s50 card, it has backdoor to change the uid of the card.
you can use libnfc' command nfc-mfsetuid to change the uid of the card
Price: $2.5 US Dollar each, mini Quantity is 10PCS.
USD25 for 10pcs.
USD110 for 50 PCS.
ATQA : 00 04
UID : d4 14 b5 06
SAK : 08 
TYPE : NXP S50 CLASSIC 1k | Plus 2k SL1
proprietary non iso14443-4 card found, RATS not supported
Answers to chinese magic backdoor commands: YES
Change the uid with proxmark3
use hf mf csetuid xxxxxxxx to set the uid.
all the commands that for UID changeable s50 card:
1. connect the pn532 board to pc with a ft232rl usb-uart.
2. download libnfc and compile it. here is howto:
now read the uid of the card, and then change the uid
The uid is 01020304, and we set it to 33333333.
read back the uid to see if it is changed
uid changable S50 card with backdoor (1k card, s50 card) x 1
We will dispatch the items when received the payment.
Shipping time and cost(for reference only):
USD8 for China post air mail: 20 business days or more
USD28 for DHL or EMS: about 5 bussiness days
Express company need the following information to delivery a parcel:
Payment Method Accepted
We accept Paypal, WireTransfer and Wester Union payment.
Please contact us for payment.
E-mail: firstname.lastname@example.org or email@example.com
Return & Replacement Terms & Conditions
Buyer can return the item in the original package within 7 days upon receiving if you are not happy with it. We will refund you or send replacement to you within 3 working day after the item is received.