This blog has featured several stories about payment card skimming devices designed to be placed over top of credit card terminals in self-checkout lanes at grocery stores and other retailers. Many readers have asked for more details about the electronics that power these so-called “overlay” skimmers. Here’s a look at one overlay skimmer equipped with Bluetooth technology that allows thieves to snarf swiped card data and PINs wirelessly using nothing more than a mobile phone.
The rather crude video below shows a Bluetooth enabled overlay skimmer crafted to be slipped directly over top of Ingenico iSC250 credit card terminals. These Ingenico terminals are widely used at countless U.S. based merchants; earlier this year I wrote about Ingenico overlay skimmers being found in self-checkout lanes at some WalMart locations.
The demo video briefly shows the electronics hidden on the back side of the overlay skimmer, but most of the sales video demonstrates the Bluetooth functionality built into the device. The video appears to show the skimmer seller connecting his mobile phone to the Bluetooth elements embedded in the skimmer. The demo continues on to show the phone intercepting PIN pad presses and card swipe data. Continue reading →