In the last fifteen years, we have witnessed a dramatic trans formation of our society through the miniaturization of computing technologies. This introduced a new age in which people can access the power of computing devices on-demand, just by reaching into their pockets. While such electronics can be helpful in numerous situations, these technologies alone have limited reach and impact. With ?Imperceptible Textile Interfaces?, our vision is to embed intelligence into the ubiquitous medium of textiles, thereby ushering in a new era in which everyday objects and even the very clothes we wear can play an unobtrusive yet always-accessible and powerful role in enhancing our experience of all aspects of our lives ranging from transportation and communication to work and play. In this talk, we will present a novel sensing approach enabling a new kind of yarn-based, resistive pressure sensing.