A hand dryer is defined as an electric machine that might make use of a heating element and also an air blower to dry the hands after hand washing. The hand drying is commonly used in public toilets as it is a cost-effective alternative to paper towels. These machines might either operate with the push of a button or automatically with the use of a sensor. These hand dryers are also defined as electronics that are used for drying wet hands in kitchens, restaurants, and restrooms. They help to dry your hands within seconds. One just have to keep your hands under the vent, and the warm air from the machine will dry the hands quickly.