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Now in 2025, a new MIT device is using the same methods to measure blood sugar without touching a drop of blood. Early tests show it can match the accuracy of today's finger prick tests by shining near-infrared light on the skin - no needles, no implants. Here's how👇 ▶ A glucose reading without breaking the skin ↳ A beam shines on the skin and detects glucose from the reflected signal. They're now trying to: - Reduce the device to watch size - Ensure accuracy across different skin tones - Optimise it for day-long wear Diabetes affects over 400 million people worldwide, and finger-prick pain is still a daily reality.