Researchers Find Breathalyzers To Be Just More Faulty Cop Tech Capable Of Putting Innocent People In Jail
Good news for motorists:
law enforcement is using something just as unreliable as $2 field drug tests to justify arrests and searches.
Field drug tests have been known to declare donut crumbs meth and drywall dust cocaine.
Yet they're still in use, thanks to their low price point. A costlier apparatus, used to determine blood alcohol levels during sobriety tests, appears to be just as broken as cheap drug tests.
the report showed the breathalyzer "tipped the scales" in favor of prosecutors, and against drivers.
One section in the report raised issue with a lack of adjustment of a person's breath temperature.
Breath temperature can fluctuate throughout the day, but, according to the report, can also wildly change the results of an alcohol breath test. Without correction, a single digit over a normal breath temperature of 34 degrees centigrade can inflate the results by six percent -- enough to push a person over the limit.
The quadratic formula set by the Washington State Patrol should correct the breath temperature to prevent false results. The quadratic formula corrects warmer breath downward, said the report, but the code doesn't explain how the corrections are made. The corrections "may be insufficient" if the formula is faulty, the report added.
The Washington State Patrol also disabled another feature that might have prevented false positives.
The code is also meant to check to ensure the device is operating within a certain temperature range set by Draeger, because the device can produce incorrect results if it's too hot or too cold.
But the report said a check meant to measure the ambient temperature was disabled in the state configuration.
"The unit could record a result even when outside of its operational requirements," said the report.
If the breathalyzer was too warm, the printed-out results would give no indication the test might be invalid, the report said.
https://www.techdirt.com/articles/20180511/11181839820/researchers-find-breathalyzers-to-be-just-more-faulty-cop-tech-capable-putting-innocent-people-jail.shtml