Senbiosys, an EPFL spin-off, has unveiled a jewelry-like smart ring that incorporates all the health-monitoring features currently available in smart watches. The company's notable achievement in miniaturization - made possible thanks to the world's smallest sensor, developed at EPFL - appears to have major market potential, as its recent crowdfunding campaign raised five times more capital than expected. The market for connected medical devices is booming. According to Bloomberg, it will expand by a factor of six between 2021 and 2028 to reach 296 billion dollars. At the same time, these devices are collecting increasingly reliable data, and programmers are developing ever-more powerful algorithms to process them. Many wearable devices today use photoplethysmogram (PPG) sensors - placed for example under connected watches and distinguishable by the colored LED light they emit - to measure vital signs like heart rate, blood oxygen levels, breathing rate and blood pressure. After several years of miniaturization research, EPFL engineers have developed technology that concentrates all the monitoring capabilities available on smart watches into an area that's four times smaller, breaking all records.
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