optical sensing

By Brian Dolan 08:24 am March 12, 2014
Last October Waterloo, Ontario-based Airo Health, a small startup founded by recent graduates, began taking preorders for a passive nutrition-tracking, wristworn device on its website, only to refund its backers a few weeks later after admitting it should have tested and validated the device further before putting it up for sale. Last week Healbe, a company with offices in San Francisco and...