def last_tag_protocol
      tag = ::FFI::MemoryPointer.new(:string)
	  proto = ::FFI::MemoryPointer.new(:int)
      Klass.getLastTag2(@handle, tag, proto)
      Phidgets::FFI::RFIDTagProtocol[proto.get_int(0)]
	end
def last_tag_protocol
      tag = ::FFI::MemoryPointer.new(:string)
	  proto = ::FFI::MemoryPointer.new(:int)
      Klass.getLastTag2(@handle, tag, proto)
      Phidgets::FFI::RFIDTagProtocol[proto.get_int(0)]
	end
Returns the protocol of the last tag read by the reader. This may or may not still be on the reader - use {Phidgets::RFID#tag_present} to find out.

 @return [Phidgets::FFI::RFIDTagProtocol] returns the last tag protocol or raises an error