But as airports and government leaders began discussing how to create flame-free airport terminals, the task became more complicated. Would newsstands and other small airport stores located beyond the security checkpoint have to stop selling lighters? Would airports have to ban smoking and close smoking lounges? How would security screeners detect matches in passengers' pockets or carry-on bags when they don't contain metal to set off the magnetometers? And what about arriving international travelers, who might have matches and lighters with them as they walk through the terminal?"