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Hi @mifaresdk
I can't authenticate block with "key a" when I write new content to sector trailer.

My tag is RFID 1k.

I do this:
on new tag with default config i authenticate with "key a" and "FFFFFFFFFFFF" and this result is true.
then i write AAAAAAAAAAAA078069BBBBBBBBBBBB to sector trailer ;
1-this mean is i can authenticate with key a and "AAAAAAAAAAAA",am I correct?
then i cant authenticate with both key : "key a" and "AAAAAAAAAAAA" ,and "key b" and "BBBBBBBBBBBB".

where is my mistake?

and my second question:
does it exist a free tool for write and read on RFID 1k tag on Windows?
Regards

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