Researchers at the National University of Singapore have developed a machine-washable electronic fabric that can turn clothing into an interactive graphical user interface . The prototype reportedly survived 50 gentle machine washes and 1,000 bending cycles, though it still relies on external batteries and controllers. The Register reports: The development could lead - at some point - to a "future in which clothing functions as a pervasive, multimodal human-computer interface," according to the study published in peer-reviewed science journal Nature this week. The paper shows someone interacting with computing devices using the sleeve of a wool sweater (no jokes about the Windows ugly sweater please, this is serious).…