Do you have a food allergy? Do you find it difficult to tell which foods contain the allergen you wish to avoid? Nima, a portable sensor to test allergens such as gluten, milk and peanuts, was showcased at the SXSW festival in Austin on Saturday. The sensor can currently only test for gluten but they are developing the product to test for all sorts of other allergens as well. Nima uses expendable capsules which contain a chemical process designed to identify the presence of gluten in food in about three minutes. The capsules cost about $5 each and come in packs of 12. Nima was launched in January and costs $279