code: def read_from_ndef_service(self, *blocks):
          
          if self.sys == 0x12FC:
              sc_list = [ServiceCode(0, 0b001011)]
              bc_list = [BlockCode(n) for n in blocks]
              return self.read_without_encryption(sc_list, bc_list)
docs: Read block data from an NDEF compatible tag.
  
          This is a convinience method to read block data from a tag
          that has system code 0x12FC (NDEF). For other tags this method
          simply returns :const:`None`. All arguments are block numbers
          to read. To actually pass a list of block numbers requires
          unpacking. The following example calls would have the same
          effect of reading 32 byte data from from blocks 1 and 8.::
  
              data = tag.read_from_ndef_service(1, 8)
              data = tag.read_from_ndef_service(*list(1, 8))
  
          Command execution errors raise :exc:`~nfc.tag.TagCommandError`.