Biosensor technology is the latest revolution to have caught the fancy of the scientific world. It follows a sandwiching mechanism as the compound of interest is caught by the biological recognition element which in turn goes and interacts with a transducer thereby generating a signal. The glucose sensor was the major breakthrough in this sector. Its success was followed by the emergence of companies that were willing to dedicate resources in this sector and witnessed one technological advancement after the other. Its applications are significant - agriculture, medicine, food technology, homeland security, industrial and environmental monitoring. Over 500 companies across the globe are currently involved in the field of biosensors and bioelectronics. In this paper, we observe the initial success, growth, current market outreach of biosensors in today’s diagnostic world while also considering their foray in the non clinical market. © RJPT All right reserved.