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Is that gas pump safe to use?
Last updated: 2026-10-28
Pumps are a favorite target for card skimmers. Here's the 5-second check every driver can do, and how the free SkimGuard app checks the pump for you before you pay.
Completely free · No ads · No sign-in needed
They're outside, often unwatched, and many older pumps open with the same widely copied key.
A thief hides a small device inside the pump. It copies each card and sends the data to a phone in the parking lot.
A quick look and tug, a few smart habits, and a free check with your phone.
The 5-second pump check
Before you pay at the pump.
- Wiggle the readerGive the card slot a firm tug. A real reader is solid. A skimmer clipped on top often feels loose or bulky.
- Check the sealMany stations put a sticker across the pump panel. If it says VOID, is torn, or is missing, use another pump or pay inside, and tell the attendant.
- Look at the slotA card slot that looks too big, a slightly different color, or newer than the rest of the pump is a warning sign.
- Cover the keypadSkimmers are often paired with a tiny camera. Shield your hand when you type your PIN.
- Check with SkimGuardOpen the free app before you put your card in. It listens for a skimmer and gives you a quick result.
- Pick the right pumpChoose one you can see from the store window. Pumps at the far edges get tampered with more often.
How the free app helps
Check the pump before you pay.
Many skimmers send stolen card data over a wireless signal. SkimGuard listens for that signal and gives you one clear result for where you're standing:
- 🟢 Good: checked, and nothing suspicious found. A good sign, not a guarantee.
- 🟡 Warning: something worth a closer look before you pay.
- 🔴 Alert: a likely skimmer nearby. Use a different machine, or pay inside.
Android phones can pick up a few older kinds of skimmer that iPhones can't, because Apple limits what iPhone apps can listen for.
Each check also adds an anonymous result to the free public safety map, so the next driver benefits from yours. Checks at your home stay private and are never shown.
What the app can find
- Skimmers that send stolen card data over a wireless signal, which most newer ones do.
- Results from other people's checks nearby, on the free map.
What it can't find
- Skimmers that don't send a signal, like some fake card slots. Keep looking and tugging too.
- An all-clear means nothing was found. It is not a guarantee.
Run a gas station?
Check your own readers, and show customers you do.
Your staff can check each pump and checkout terminal with a guided daily inspection and wireless scan, using the Android phones and handhelds stores already have. Your store gets a Protected pin on the public map. From $25/mo per location, and a full first-month refund if you cancel within 30 days. Each pump counts as one terminal, and so does each checkout card reader.
Check the pump before you tap.
SkimGuard is free on iPhone and Android. No subscription, no ads, and sign-in is optional.