Laser-printed PVC interface tracks finger direction and speed without wiring

Touchscreens and other touch-based controls, from smartphones and tablets to smart devices and wearable electronics, have become part of everyday life. However, many touch interfaces depend on batteries, external power, electrodes and wiring, which can increase costs and make them difficult to install in places where conventional electronics are impractical. Finding a simpler way to create touch-sensitive controls could therefore open new possibilities for wearable devices and the growing Internet of Things (IoT).