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A car that could disable the keys of an intoxicated driver isnt far from reality.
Cars of the future could be equipped with special touch pads, located in the push-to-start button or steering wheel, to measure whether or not a driver has been drinking.
The concept is simple: The vehicle wont start if the device determines that the driver has a blood alcohol concentration (BAC) of 0.08 percent or higher.
The technology behind it is a bit more complex: Measurement begins by shining an infrared light on the drivers skin
A portion of the light is reflected back to the skins surface, where it is collected by the touch pad. This light contains information on the skins unique chemical properties, including the concentration of alcohol, explains a paper from the Driver Alcohol Detection System for Safety (DADSS), one of the research programs funding the technology.
The Department of Transportation (DOT) recently demonstrated the anti-drunken-driving technology.
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