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This device was developed thanks to the good 'ole diabetics. This IR blood scanning technology was originally created to help diabetics scan for blood glucose levels. The modified device creates an IR light that will penetrate 5 mm into the skin and reflects light into a scanner that will detect the blood alcohol level. Unfortunately it still requires drivers to place their arm into the contraption. Oh well, it still seems better than a breathalyzer and possibly more accurate.

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Infrared Blood Alcohol Test [Gadget-Review]