Vape detection can trigger signage or lights outside toilets

https://markets.businessinsider.com/news/stocks/zeptive-software-update-boosts-vape-detection-performance-and-adds-new-features-free-update-for-all-customers-with-zeptive-s-custom-communications-module-1035951542

Vape detection can trigger signage or lights outside restrooms, indicating short-term checks without exposing the identity of any trainee.