In Brief

Simple plug-in device detects when tobacco or marijuana is smoked in a room, then lets one know via wi-fi alert

If you’ve ever held a large party or been responsible for a public facility, you’ve had the experience of wandering into a room and smelling the tell-tale scent of tobacco or marijuana smoke, but not being able to do anything about it because the smoker had long since left the area.

AirGuard may be a solution to this problem. The portable device is based on the work of Joe BelBruno, a research chemist and professor at Dartmouth who has studied the effects of secondhand smoke. Using technology he placed in a sensor to record that data, AirGuard can sense the presence of tobacco or marijuana smoke in the same room as the unit. It uses a pair of chemically sensitive polymer films to detect the smoke, and to communicate the infraction to the circuitry in the device.

This content is available for Basic and Pro Members.
Already a member, log in