The unification of textiles and electrics opens up many interesting possibilities for sensorics, actuation, energy transport, energy storage, and information transport. Electrics need conductive structures. Industrially knittable and weavable filaments and yarns are in this chapter overviewed in a typology of seven classes. These are the basics for the integration in approach that is put forward as a concept for successful production of smart textiles.Integration means that a "device" is (1) made by a textile production process and (2) made as a textile. We focus on smart textiles for mechanical sensoring that give an electrical output as these embrace such basic quantities as position, movement, speed, acceleration, elongation, forces, pressure, and vibration. Cases of mechanical sensors are demonstrated based on piezoelectricity and capacitive techniques. It is shown that these are promising technologies for smart textiles in general and the integration approach specifically.