Vape detection can set off signage or lights outside washrooms

https://privatebin.net/?5c823becc9c9ec18#D76yP8J33U6SqTbwwxE6Qaypq6vCPjdLBNJx4eWZ2qbC

Vape detection can activate signage or lights outside bathrooms, signaling short-term checks without exposing the identity of any trainee.