Chineses have invented "clever" chopsticks
Chinese firm has created "clever" Chinese food sticks which define the freshness of foodstuff by means of the special indexes. At a premise of smart sticks in meal, gadget sends on the interfaced smart phone the message on suitability of food to the use. If the food is safe, on sticks dark blue colour is seen and if the tool finds out toxic substances red light appears. The researchers try to expand the functionality, so that it could define caloric content of food, temperature and level pH.