Japanese for beat, pulsation http://jisho.org/words?jap=kodou&eng=&dict=edict
Run on device with
$ rake device
http://www.raywenderlich.com/52080/introduction-core-bluetooth-building-heart-rate-monitor https://github.com/rubenfonseca/motion-bt-low-energy-example http://oleb.net/blog/2013/04/starting-bluetooth-low-energy-development-ios/ http://www.doubleencore.com/2013/09/whats-new-in-bluetooth-le-ios-7/