Comment by ChrisRR

This is similar to a case a few years back where someone asked to see the source code of a breathalyser that had found them guilty.

AFAIR, the breathalyser was incorrectly averaging the readings, giving disproportional weight to the first reading.

I don't know if it was enough to rule in their favour, but I'm sure it called the data into question

Edit: Looks like it was a Draeger breathalyser https://www.schneier.com/blog/archives/2009/05/software_prob...