weren't enough of a pain at the pump, we're learning that many drivers are actually being ripped off when they pay. abc's elisabeth leamy reports you can do everything right and still have your credit card information stolen. >> reporter: florida, new york, georgia, california. over the past week crooks have installed tiny skimming devices that capture your account information at gas stations in every corner of the country. >> the gas pumps themselves aren't monitored as closely as point of sale terminals that are normally located in stores. so they offer a bit of anonymity to some of these criminal actors. >> reporter: some gas stations have even started placing a seal across their pumps so they can tell if somebody has opened them to install a skimmer. >> it is difficult for us and time-consuming for us to find the physical evidence we need to tie these criminal actors to the actual compromise of these cards. >> reporter: here's how the scam works. you swipe your card to pay, not knowing that a tiny device has captured your card number. the thieves then use that number to create a clone of your card with a machine we found freely available on the internet. with a single swipe, security expert chris o'farrell showed me how easy it is by cloning my