NFC Tag Reader with PyNFC Library

This function reads data from an NFC tag using the PyNFC library, supporting different types of NFC tags such as ISO14443A, ISO14443B, etc.

Technology Stack : PyNFC, NFC tag

Code Type : Function

Code Difficulty : Intermediate

                
                    
def read_tag(tag_type='ISO14443A', timeout=1000):
    """
    This function reads data from a NFC tag using the PyNFC library.
    It supports different types of NFC tags like ISO14443A, ISO14443B, etc.
    
    Args:
        tag_type (str): The type of NFC tag to read from. Default is 'ISO14443A'.
        timeout (int): The timeout value in milliseconds. Default is 1000.
    
    Returns:
        bytes: The data read from the NFC tag.
    """
    import nfc
    # Create a new NFC reader
    reader = nfc.ContactlessFrontend('usb')
    # Connect to the NFC tag
    tag = reader.connect(tag_type)
    # Read data from the NFC tag
    data = tag.read()
    # Disconnect from the NFC tag
    tag.ndef.close()
    return data