BioSportHRService
Provides a service to Google Fit with heart rate data from BioSport headphones.
Research:
BioSport headphones: http://smsaudio.net/online_manuals/WIRED/IN-EAR/BIOSPORT/sms_wired_in-ear_biosport_OM_EN.pdf
Intel SDK: https://software.intel.com/en-us/articles/intel-heart-rate-core-sdk-readme https://software.intel.com/en-us/intel-heart-rate-sdk-support/faq https://software.intel.com/en-us/intel-heart-rate-sdk-support/documentation https://software.intel.com/en-us/intel-heart-rate-sdk/documentation
Android Fitness Sensor Service: https://developers.google.com/android/reference/com/google/android/gms/fitness/service/FitnessSensorService