Guy M. Hatch, M.D. practiced as a Board Certified General Pediatrician for 21 years in Logan, Utah. He then led an R&D team in successful development of a reflectance SpO2 sensor for use with premature infants. During testing of this sensor, a previously unreported photonic phenomenon was discovered. For the following eleven years, he was a Mechanical Design Drafter at ATK, Logan, Utah. He is currently a co-founder and the CTO of Reveal Biosensors, Inc., San Jose, CA, continuing the development of a new biosensor based on his earlier discovery. He can be reached at: [email protected] and (435) 757-8081.