/technologies/wearable-technology/b/blog/posts/smart-earring-keeps-track-of-your-heart-rate-calories-and-activityA smart-earring that tracks your heart rate and activity (via Ear-O-Smart )Activity tracking has been a buzz product in the wearable technology industry for a while now. Whether its bracelets, shoes, or shirts, there are lots of wearables out there then-USTelligent Community 12