Some of the LinkedIn Responses are direct and on-point, and also hilariously/depressingly based depending on how you look at it:
EDIT: In hindsight, I think I should've looked into posting this in a different community.. It's closer to a silly "innovation".. soo.. is this considered FUD? I also don't support smoking or vaping, especially among kids. Original title had "privacy-violating" before the "solution".
My work had something like this to detect drug usage on premises for a while (it was and is a problem still) and it costed like 30k capital and 2-3 opex a year. We had it for like a year and only took it out because there were too many false flags and security didn’t and doesn’t have the staff to be chasing down every alert anyway.
It was neat that on paper it was able to detect different drugs, heroin, weed, meth all flagged different alerts with 2 of those contacting police when detected. Unfortunately it was only like 70% accurate and we didn’t/don’t have enough security staff to use it properly so it’s gone now.