A new report from Ericsson AG suggests Apple Inc.’s upcoming Apple Watch could address a market that's far larger than what current wearable sales would indicate. In a worldwide study of more than 54,000 people, the technology maker examined the idea of the “quantified self,” in which individuals track their daily metrics such as calories consumed, steps taken or quality of sleep. Ericsson found that interest levels in wearables are much higher than actual use, and that...
