Energy Efficiency Markets, Nov. 25, 2015, by Lisa Cohn.
http://energyefficiencymarkets.com/energy-harvesting-sensors-eliminate-the-need-for-batteries-in-some-applications/

"Energy-harvesting sensors that are made of fabric and eliminate the need for batteries in some applications are the focus of this podcast interview with Keith McMillen, CEO and founder of BeBop Sensors."