Made the best hidden vape hands down, hid a battery and the pods plus I made a hole in the cap so you can vape on in without even opening it : Understanding the Hidden Health Risks of Vaping UL Research Institutes Vape Detectors and Sensors: Everything You Need to Know 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.