Fake e-cigarette liquid is putting vapers at risk — scanning technology could prevent it

Over 35m people worldwide now use e-cigarettes, according to one estimate. In the US, this includes 4.5 percent of the adult population. But the rise in vaping has led to a trade in fake e-liquids – the mix of water, glycerol, propylene glycol, flavors and (usually) nicotine used to create the vapor of e-cigarettes. Fake e-liquids are those that contain ingredients or incorrect concentrations of them that do not match those on the label. In particular, fakes often contain less or more nic