This is a good decision. The idea that one is allowed to present a number from a black box which no one in the court can fully understand is ludicrous.

Excerpts from the Court of Appeals of Kentucky’s opinion:
A subpoena may be quashed only upon a showing that compliance therewith would be unreasonable or oppressive. We do not believe the commonwealth and CMI have made this showing.

The request is not unreasonable because its purpose is to challenge the validity of the breath alcohol readings produced by the Intoxilyzer 5000 instrument, which is anticipated to be used at trial in support of the Commonwealth’s DUI charge against House. The reading was also used to support the aggravating factor of driving with a breath alcohol reading of .18 or more.

Relevant evidence is admissible unless excluded by some other rule. Because a flaw in the computer source code of the Intoxilyzer 5000 would be consequential to the accuracy of the reading intended to be relied upon by the commonwealth, such evidence is relevant and admissible. Accordingly, requesting the computer code to test the verity of the readings produced by the instrument is not unreasonable.