title: Heart rate sensor API for Android
body: <p>Google has published apis with respect to wearable devices. Since many smart watch manufactures state they have a heart rate sensor, I'm wondering if android published apis for it. I checked the web and didn't find anything.</p>
  
  <p>Anyone who's interested in wearable developing that happens to know about it?</p>
  
  <p>Thanks.</p>