Designed by Luc de Smet, Awear is a speculative bracelet that can detect and record the sources of allergies for children in uncontrolled environments, such as schools and playgrounds. While the child wears the bracelet, parents or teachers can check the results on a computer or smartphone. It can be removed at any time when it is deemed no longer necessary or in the way. Awear works by using an array of nanosize Raman spectroscopes that can scan any surface where light pierces. These miniature spectroscopes would look inside the wearer's skin to see if an allergic reaction is occurring, and then analyze the surrounding air to detect what allergens are in range. GPS or another similar technology would record the location. The bracelet could be linked with others to share information, and could be modified to give warnings when certain known allergens are in range. Want to design your own speculative nanotech? Check out the Call for Products in the second edition of the NANO Supermarket.