Web-accessible, wearable smart devices are gaining popularity. Google Glass started the trend, which is expanding to smart watches, headbands that sense brain waves (www.choosemuse.com), and smart clothing,such as a shirt that detects the wearer’s heart rate, speed, breathing patterns,and GPS location (www.digitaltrends.com/wearables/smar t-clothing-garments-at-ces-2015-and-beyond).