NFC Block Reader

This function reads a specific block of data from an NFC tag. It first connects to the NFC tag, then reads the data from the 4th block, and finally closes the connection.

Technology Stack : PyNFC

Code Type : NFC Tag Data Retrieval

Code Difficulty : Intermediate

                
                    
def read_block(nfc, tag_type='ISO14443-4'):
    """
    This function reads a block from a NFC tag.

    :param nfc: NFC device object
    :param tag_type: NFC tag type
    :return: Data from the block
    """
    try:
        nfc.connect(tag_type)
        response = nfc.read_block(4)
        nfc.close()
        return response
    except Exception as e:
        print(f"An error occurred: {e}")
        return None