Your meal as an energy source: harvesting heat to power smart ingestible devices

What if your slice of cake could power its own temperature sensor, telling you exactly when it’s safe to eat? A team of researchers has unveiled a breakthrough edible device that does just that, marking a major step toward safer food consumption and smarter food preparation. Indeed, we have already seen on multiple occasions how science fiction can often foresee solutions that eventually become real applications and incorporate many fundamental human wants in cutting-edge technologies. Until a..