Skim Scan instantly detects hidden skimmers in ATMs, gas pumps, kiosks, vending machines and smart parking meters. No hardware installation or modifications are required. Skim Scan even detects deep insert skimmers that are not visible or removable without accessign the internals of an ATM. Simply slide it in and pull it back out to determine if a card skimmer is present. Skim Scan works with all 'dip' or 'insert' magnetic stripe readers, but NOT EMV chip card readers or 'swiping' magnetic readers - use Skim Swipe for swiping card readers. Skim Scan can save countless hours of opening and searching through ATMs and fuel dispensers. Skim Scan can even detect tiny card skimmers hidden inside bezels and card readers on the outside of machines. Skim Scan was developed by the same engineers that created BlueSleuth Bluetooth skimmer locator already in use by dozens of local, state and federal skimmer task forces. Made entirely in the USA