How Hotels Detect Smoking: From Traditional Methods to Detection Technology Naughty question: does the smoke detector in the room detect vape or not ? Only answer based on experience, please How Do Vape Detectors Work RCS HALO Vape Detectors for Hotels A pair of hackers found that a vape detector often found in high school bathrooms contained microphonesand security weaknesses that could allow someone to turn it into a secret listening device.