Forum › MIFARE and NFC Reader IC`s › RC522 Problem with reading Some Mifare 1k cards & tags › Reply To: RC522 Problem with reading Some Mifare 1k cards & tags
Hi Soheil,
I do not believe that the problem is the RC522 module. Do you sure, all MIFARE Classic cards are genuine NXP cards?
All NXP products must fulfil strong specifications to guarantee proper use. This allows the usage also in bad conditions: reader antenna field is limited or not proper balanced etc. It exists non-NXP products were the specifications are in a “border area”. The reader tries to communicate with this card. This might work sometimes, sometime not.
The TapLinx team
I do not believe that the problem is the RC522 module. Do you sure, all MIFARE Classic cards are genuine NXP cards?
All NXP products must fulfil strong specifications to guarantee proper use. This allows the usage also in bad conditions: reader antenna field is limited or not proper balanced etc. It exists non-NXP products were the specifications are in a “border area”. The reader tries to communicate with this card. This might work sometimes, sometime not.
The TapLinx team
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