We all know that if someone is arrested on suspicion of drunk driving, they will be required to take a breathalyzer test, usually later at the police station. And this test result will be the primary evidence used against him in a drunk driving case.
The first problem with this is that the amount of alcohol in the blood is constantly changing — either rising due to absorption from recent drinking or, more likely, falling due to metabolism of the alcohol.
The second problem is that it is only illegal to have a .08% blood-alcohol concentration at the time of driving — not later at the police station. And this breath test may not be given for an hour or two after the driving has ended — particularly in accident cases, where the police may not arrive for some time. So the prosecution has to try to estimate what the blood-alcohol level was when the suspect was driving based upon the later test.
The third problem is that because of this, for the test results to be admissible as evidence in court they have to have been obtained within a certain period of time — in California, for example, within three hours.
But what if there was a breath-testing device which could record what the blood-alcohol level was at the time the suspect is actually driving?
Flexible Wearable Electronic Skin Patch Offers New Way to Monitor Alcohol Levels
San Diego, CA. Aug. 2 — Engineers at the University of California San Diego have developed a flexible wearable sensor that can accurately measure a person’s blood alcohol level from sweat and transmit the data wirelessly to a laptop, smartphone or other mobile device. The device can be worn on the skin and could be used by doctors and police officers for continuous, non-invasive and real-time monitoring of blood alcohol content.
The device consists of a temporary tattoo — which sticks to the skin, induces sweat and electrochemically detects the alcohol level — and a portable flexible electronic circuit board, which is connected to the tattoo by a magnet and can communicate the information to a mobile device via Bluetooth…
Clearly, the government would be very interested in requiring anyone convicted of DUI to wear such a patch for the probationary period (commonly three years).
But what if that government decided to take the next step…..and require everyone to wear these skin patches — as a condition for driving any vehicle?
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