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Password can't authentication

Question asked by gqlei@taisingind.com on Jul 18, 2019
Latest reply on Jul 26, 2019 by Javier Camino

I tried to set the tag213 password protection with ACR122U. Here are the commands listed below.

Step 1  Set PWD:       FF D6 00 2B 04 31 32 33 34 , set password ‘1234’

Step 2  Set PACK:      FF D6 00 2C 04 00 00 00 00, 2byte PACK and 2 byte RFUI set to 00

Step 3  Set AUTH0:   FF D6 00 29 04 04 00 00 00 ,the default value is 04 00 00 FF, with password protection disabled.

After doing above steps, tag213 shows that the password is protected, but when I tried to remove the password with NFC Tools Pro, an android app, I was prompted to fail.

Is the password format incorrect? I checked the ACCESS byte in CFG1(Page2A) and it has a value of 0 .

Can anyone help me solve this problem?Thanks.#

 

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