Hound Labs is a scientific device company that has developed patent-pending technology capable of rapidly, accurately, and inexpensively measuring recent marijuana use in a person's breath. The company's proprietary approach allows for breath samples to be retained for future analysis -- protecting drivers, employees, law enforcement, and employers from wrongful prosecution or job termination. The Hound® marijuana breathalyzer solves the fundamental safety problem associated with marijuana legalization: How to objectively determine if someone recently used marijuana and therefore could be impaired while driving or working. Hound Labs, Inc. has created the world’s first field-tested marijuana breathalyzer to measure recent marijuana use in breath. Working with senior scientists, law enforcement, and researchers, the Company developed a patent-pending technology using a combination of chemistry, physics, and engineering. This novel approach resulted in the incredibly efficient and responsive technology required to measure THC (the psychoactive ingredient in marijuana) in breath – a method that is more than one million times more sensitive than the technologies used today to measure alcohol in breath.