As if the physical symptoms and restricted diet aren't enough, many diabetics must also give themselves blood tests every day, pricking their fingers repeatedly to see how much sugar is in their blood. But a new sensor from Sandia National Labs -- yes, the nuclear-weapons people -- makes the chore painless. A powerful infra-red light shines through the fingertip; careful analysis of the light as it emerges reveals the exact composition of the blood coursing through that finger, including the precise percentage of sugar. Sandia is seeking a corporate partner to market the device.
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