Researchers change the game when it comes to activity tracking

The creation of high-resolution extrusion printing -- think 3D printing but with ink that conducts electricity -- has enabled researchers to explore the potential of wearable human motion devices. Wearable technology -- smartwatches, heart monitors, sleep aid devices, even step counters -- have become part of everyday life. And researchers have now created even smaller, lighter and highly-accurate sensors that can be integrated into clothing and equipment.