Too often there are cases where a person sees an unauthorized transaction on their bank or credit card statement without ever knowing how it happened. In many of these cases, it’s the result of falling victim to a skimmer. On gas pumps, skimmers can be as small as a thumb drive and can be hard to detect. Criminals can sometimes gain access to a gas pump key, which can be used at many pumps to install devices. In the past couple of years, skimming has advanced to include Bluetooth technology, which criminals use to keep from having to return to the gas pump to physically retrieve stolen data. Do you know what to look for when looking for such a device? Here are some examples of what credit card skimmers can look like: