June 22, 2017
by Colleen Tressler, Consumer Education Specialist, FTC

Skimmers are illegal card readers attached to payment terminals — like gas pumps — that grab data off a credit or debit card’s magnetic stripe without your knowledge. Criminals sell the stolen data or use it to buy things online. You won’t know your information has been stolen until you get your statement or an overdraft notice. 
Skimmers are nothing new, but technology has made them smaller and harder to find. Sometimes, they’re even hidden inside a gas pump. 

Here are tips to help you avoid a skimmer when you gas up: 
Make sure the gas pump panel is closed and doesn’t show signs of tampering. Many stations now put security seals over the cabinet panel. This is part of a voluntary program by the industry to thwart gas pump tampering. If the pump panel is opened, the label will read "void," which means the machine has been tampered with. 
Untampered label on gas pump is dark red. Voided label has white stripes.
Photo credit: National Association of Convenience Stores (NACS) and Conexxus

Take a good look at the card reader itself. Does it look different than other readers at the station? For example, the card reader on the left has a skimmer attached; the reader on the right doesn’t. 
A reader with a skimmer has an attachment that extends the reader as opposed to just the reader itself.
You can try to wiggle the card reader before you put in your card. If it moves, report it to the attendant. Then use a different pump. 
If you use a debit card at the pump, run it as a credit card instead of entering a PIN. That way, the PIN is safe and the money isn’t deducted immediately from your account. If that’s not an option, cover your hand when entering your PIN. Scammers sometimes use tiny pinhole cameras, situated above the keypad area, to record PIN entries. 
Monitor your credit card and bank accounts regularly to spot unauthorized charges. 
If you're really concerned about skimmers, you can pay inside rather than at the pump. Another option is to use a gas pump near the front of the store. Thieves may target gas pumps that are harder for the attendant to see.