User's Manual

ACR1281S
 Advanced Card Systems Ltd. Page 49 of 56
Typical sequence may be:
- Present the Tag and Connect the PICC Interface
- Read / Update the memory of the tag
Step 1) Connect the Tag
The ATR of the tag is 3B 8C 80 01 50 00 05 70 3B 00 00 00 00 33 81 81 20
In which,
The ATQB = 50 00 05 70 3B 00 00 00 00 33 81 81. It is an ISO14443-4 Type B tag.
Step 2) Send an APDU, Get Challenge.
APDU Command: 00 84 00 00 08
APDU Response: 1A F7 F3 1B CD 2B A9 58 90 00
Hint:
For ISO14443-4 Type A tags, the ATS can be obtained by using the APDU “FF CA 01 00 00