I'm sorry, but I'll have to state my discontent with your product. Firstly, I question it's usability from the beginning. How accurate is it? Can you get something similar to a BAC with it? Also how often/likely is it that a false positive will happen? More importantly I fear that the "Cannabis Breathalyzer" will become like a polygraph, which can't tell whether your actually lying or not, but is merely used as a tool by police that's used against people. Comparing Alcohol to Cannabis also isn't right. These are vastly different chemicals with different effects on people. Over ~10000 people died in 2017 from alcohol impaired driving[0], can anything remotely similar be said of Cannabis? Don't get me wrong driving under the influence of any drug can be dangerous, and is why on most prescription bottles you'll have a "Do not operate heavy machinery" warning on it, but that doesn't stop everyone on medication from driving. Prohibiting Cannabis has caused much grief in the past that this tool, without accurate results and proper use, is likely going to cause more harm than good. If anything it will probably just help increase the incarceration rate to meet the status quo.
[0] https://crashstats.nhtsa.dot.gov/Api/Public/ViewPublication/...