This 3D Printed Bottle Cap Tells You If Your Milk Goes Bad

Not a fan of the lovely taste of spoiled milk? You may never have to taste spoiled milk again. Researchers from the University of California at Berkley and National Chiao Tung University in Taiwan created what they call a "smart cap" for food storage containers that can detect spoilage. Using 3D printed electronics, the lids house circuits and passive wireless sensors that are capable of determining if milk or juice has spoiled when it comes in contact with the lid. The components can detect changes in the liquid due to the presence of bacteria and transmit details wirelessly in real time. What do you think of this idea ? Yay science ?