1. School of Industrial Engineering, Purdue University, West Lafayette, Indiana 47907, USA
2. Flex Laboratory, Purdue University, West Lafayette, Indiana 47907, USA
3. Regenstrief Center for Healthcare Engineering, Purdue University, West Lafayette, Indiana 47907, USA
4. The Center for Education and Research in Information Assurance and Security (CERIAS), Purdue University, West Lafayette, IN 47907, USA
5. Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, USA