1. B. Barnes. At Disney Parks, a Bracelet Meant to Build Loyalty. Available at http://www.nytimes.com, 7-January-2014.
2. Bluetooth SIG. Bluetooth Core Specification 4.2. Available at https://www.bluetooth.org/en-us/specification/adopted-specifications, 2-Dec-2014.
3. M. Buettner, G. V. Yee, E. Anderson, and R. Han. X-MAC: A Short Preamble MAC Protocol for Duty-cycled Wireless Sensor Networks. SenSys '06, pages 307--320, New York, NY, USA. ACM.
4. K. Collins, S. Mangold, and G. Muntean. Supporting Mobile Devices with Wireless LAN/MAN in Large Controlled Environments. Communications Magazine, IEEE, 48(12):36--43, December 2010.
5. J. DeCuir. Introducing Bluetooth Smart: Part 1: A look at Both Classic and New Technologies. Consumer Electronics Magazine, IEEE, 3(1):12--18, Jan 2014.