Updated : Removed unsupported claims about cash errors and clarified bank-specific features, reverse-PIN myths and skimming checks.
Do not rely on entering your ATM PIN backwards to call the police. It is not a standard emergency feature. Other supposed ATM “secrets” also mix up real features, bank-specific services and myths. Use the instructions from your bank and the machine’s operator, especially when cash or a card is retained.
Common ATM claims: what is actually useful?
| Claim | What to know |
|---|---|
| A reversed PIN silently calls police | Do not rely on it as an emergency system |
| Every ATM supports phone or cardless withdrawals | The bank, card, account and machine must support that method |
| An ATM always has enough cash | Cash or particular note denominations can run out |
| An ATM cash error will fix itself immediately | Keep the transaction details and report it through official support |
| Only loose-looking card readers can be skimmed | Some tampering is hard to spot; protect the PIN and monitor the account too |
Where the reverse-PIN story came from
A 2010 US Federal Trade Commission report examined proposed ATM emergency systems and described the reverse-PIN claim as an unimplemented urban legend. It is historical evidence about the proposal, not a hidden banking feature you should test.
Guessing or reversing a PIN can simply lead to a failed attempt or a card-security response. In danger, prioritize your safety and contact local emergency services when it is safe to do so. Do not put yourself at risk trying an internet trick.
Cardless cash is a real feature on supported systems
Some banks support withdrawals through their app, a one-time code or a contactless card or wallet. The method and eligibility vary. A contactless symbol or a card in a phone wallet does not by itself prove that a particular ATM withdrawal will work.
Check the bank’s official app and ATM instructions before relying on phone-only access. If you are having trouble adding a card in the first place, our Apple Pay card-setup guide covers that separate issue.
What if the ATM keeps your card or gives the wrong cash?
- Note the machine’s location or ID, time, requested amount and what happened.
- Keep any receipt and check the transaction in your bank’s official app.
- Contact the bank or ATM operator using a verified number from the bank’s app, website or card information.
- If the card is retained or you suspect fraud, ask the bank how to freeze or replace it.
- Follow the bank’s reporting process rather than assuming an error or extra cash can be ignored.
Do not rely on a number pasted over the machine’s original label or accept a stranger’s offer to enter your PIN. Do not make repeated transactions just to investigate a suspected malfunction.
Check for skimming, but do not depend on appearance alone
The FBI’s skimming guide explains how criminals capture card information and PINs. Check for visible tampering, cover the keypad when entering the PIN and choose a different machine if something looks wrong. Report suspicious equipment rather than pulling it apart.
Review transaction alerts and account activity as well. Some attacks are difficult to spot from the outside, and a machine looking normal is not a guarantee that every transaction is safe.