A Dutch technology company has launched a prototype of a smart lunch box that warms food via steam. Called the Heatbox, this model assures the user fresh and warm food within eight minutes. It works on an 18,000mAh battery that needs a recharge after three operations. The Heatbox is activated by a button located on the front of the device or through a companion app installed on the user’s smartphone. The device requires only 20ml of water to heat the food. Since food is reheated by steam, the nutrient content is not lost.