Unexpected charges are piling up at hotels across the country as new smoking detection sensors raise questions about accuracy. Your guests aren't the only ones checking in. So are their vape pens. With over 13 million regular vapers in the U.S. alone, unauthorized vaping is a major operational risk for hotels. Vape Sets Off Fire Alarm: How Do Vape Detectors Work? Vapesourcing Vape Detector for Schools, Hotels, Home