Allergy Amulet is a rapid, portable, point-of-consumption allergen detection device. Users will wear the device as a necklace, bracelet, or carry it in their pocket or purse. The first Amulet will detect peanut allergens; future Amulets will detect other common food allergens and ingredients.
Amulet uses a molecularly imprinted polymer that can capture the presence of an allergen in seconds. The polymer has synthetic cavities that match specific allergens in shape, charge, and other molecular properties. Detected allergens bind to the cavities in a “lock-and-key” fit. The binding then sets off a chemical reaction that alerts the user to the allergen presence.
The company claims the technology has been validated at concentrated as low as parts per trillion. Allergy Amulet is targeting peanut protein for the first product, with a target threshold level of 1 to 2 parts per million. The company later plans devices to detect tree nuts, dairy, shellfish, and gluten.
http://www.allergyamulet.com/#the-amulet