1. Fitbit, Inc. Fitbit Official Site.
http://www.fitbit.com
. Accessed 2 October 2014
2. Google. Google Glass.
http://www.google.com/glass
. Accessed 20 September 2014
3. Google. Google Developers Voice Input.
https://developers.google.com/glass/develop/gdk/voice
. Accessed 8 October 2014
4. Google. Context Android Developers.
http://developer.android.com/reference/android/content/Context.html
. Accessed 1 October 2014
5. Oracle. KeyGenerator (Java Platform SE 7).
http://docs.oracle.com/javase/7/docs/api/javax/crypto/KeyGenerator.html
. Accessed 1 October 2014