Detect reader on nfc

Hi,
I have 2 NFC cards saved, one of them includes detect reader, it also has a UID number at the bottom. On the other one, it does not have the feature detect reader. Why does one have one and the other doesn’t?

I need it to test if I can brute force my door lock also how do I add the detect reader feature to my NFCs?

it’s only for mifare classic files. the other file you have must not be mifare classic as it does not work for other kinds

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Is there anywhere i can download mifare key detect reader files?

why would you want other peoples sector key nonces lol??