User's Manual

ACG HF Multi ISO RFID Reader V1.0
ACG Identification Technologies GmbH 18
5.1.2 Blocks 3, 7, 11, 15, …
Transport keys are set on delivery:
Key A (6 bytes) Access Conditions (4 bytes) Key B (6 bytes)
Figure 5-3: mifare
®
Standard: block 3, 7, 11, 15, …
Key A
A0 A1 A2 A3 A4 A5 (Infineon) or FF FF FF FF FF FF (new Philips cards)
Key B
B0 B1 B2 B3 B4 B5 (Infineon) or FF FF FF FF FF FF (new Philips cards)
Access Conditions
FF 07 80 xx (key A is used to read or write; key A itself is not readable; key B is data
only). For further information refer to the mifare
®
card manual.
Remarks
Enabled keys are always read as 00 00 00 00 00 00
Using key B as a data area will cause a security gap, due to the fact that it is
necessary to rewrite key A and the access conditions at each write process. It is not
recommended to use key B as a data storage area.