The Vaping Device Classification System encompasses four classes of devices including three electronic nicotine delivery systems (ENDS):
Each device consists of two major components:
attached to each other by a connector. The vaporizer includes an atomizer (a unit for liquid vaporization and atomization), a tank, air ducts, wires, controls and a mouthpiece. The power supply assembly includes one or more batteries, displays, wires and controls. Each connector has two interfaces, one mated to a vaporizer and the other to the power supply.
Overall view of our classification system is shown in Figure 1 where the four vaping device classes are depicted along each other.