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Breathalyzer Source Code Ruling Upheld

dfn_deux writes "In a follow up to a 2005 story where Florida judge Doug Henderson ruled that breathalyzer evidence in more than 100 drunk driving cases would be inadmissible as evidence at trial, the Second District Court of Appeal and Circuit Court has ruled on Tuesday to uphold the 2005 ruling requiring the manufacturer of the Intoxilyzer 5000, Kentucky-based CMI Inc, to release source code for their breathalyzer equipment to be examined by witnesses for the defense of those standing trial with breathalyzer test result being used as evidence against them. '"The defendant's right to a fair trial outweighed the manufacturer's claim of a trade secret," Henderson said Tuesday. In response to the ruling defense attorney, Mark Lipinski, who represents seven defendants challenging the source codes, said the state likely will be forced to reduce charges — or drop the cases entirely.' ... What this really means is that outside corporations cannot sell equipment to the state of Florida and expect to hide the workings of their machine by saying they are trade secret. It means the state has to give full disclosure concerning important and critical aspects of the case."

4 of 520 comments (clear)

  1. Fish. by girlintraining · · Score: 4, Interesting

    I will bet money on one of three outcomes:

    1. Breathalyzers cease to be used.
    2. The source code will be released and showed to have MAJOR flaws or an algorithm that is not scientific at all.
    3. The source code will be suddenly patched and every system will be required to be updated. The "new" source code will be released. Prosecution rates plummet, for some "unknown" reason.

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  2. Presumptive admission of guilt by dazedNconfuzed · · Score: 4, Interesting

    If you're pulled over and suspected of DUI, then don't take the damn test

    In many states, refusal to take a breathalyzer test is legally presumed an admission of guilt. You'll have a much harder time reversing a conviction based on a refusal to take the test (to wit: voluntary admission of guilt without evidence thereof) than challenging the accuracy of the instruments used.

    Good luck with that.

    (BTW: the whole "release the source code" thing is more a rasing-the-stakes legal tactic than a legitimate questioning of the equipment involved. Are you REALLY ready to expend considerable resources to find vindicating flaws in a commercial product? You have to convince the prosecutor you will do it, and succeed, before he'll drop charges in favor of keeping that revenue path flowing.)

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  3. Re:Good luck with that! by Ares · · Score: 4, Interesting

    minnesota is actually involved in a similar case with the same company: http://wcco.com/crime/breathalyzer.lawsuit.minnesota.2.669505.html. the only difference is that in our case, the state dept of public safety claims that its part of the contract that the source code be made available to the state and cmi is still refusing to provide source.

  4. Re:Good luck with that! by philspear · · Score: 4, Interesting

    I don't know much about breathalyzers besides what they do. Is the source code really the limiting factor to you making a competing line of breathalyzers? I would think the sensor that measures the alchohol on your breath would be the most expensive and most difficult to manufacture part of the whole thing. Perhaps wrongly I would have assumed the source code would be the third easiest thing to make, behind the case for the thing and the hose you breathe into. In other words, I would have assumed that the source code would have been nothing too secret, while the actual sensor was what they spent a lot of money developing.

    Of course, if the source code were very simple, I guess the company probably would have released it rather than facing the 2 mil fines. Or maybe that's just typical corporate arrogance.

    Can someone explain this to me (hopefully keeping in mind that I have no background in coding)?