In last week’s Interbike Report, Part 1: The Trends, I hit on a number of trends we saw at Interbike. Today, I’d like to expand on the technology behind one of those trends. It's also being employed as a stand-alone product. The surge of so-called smart helmets hitting the market has led some manufacturers to leverage technology so that riders can hear audio without inserting earbuds, wearing traditional headphones or acquiring the audio in the traditional way. The tech is called bone-conduction audio.