Your credit card sends data – even when you're not using it. Modern contactless cards communicate wirelessly. While convenient for everyday use, this makes them the target of a growing fraud scheme: RFID skimming.
What is RFID skimming?
RFID stands for "Radio Frequency Identification" – a technology that enables contactless payments, access cards, and IDs. With RFID skimming, a perpetrator holds a compact card reader close to your bag, wallet, or jacket. Card number, expiration date, and other data are read in fractions of a second – on the subway, in an elevator, or while waiting in line.
Which cards are affected?
All cards with the contactless symbol (four curved lines) are affected:
- Credit cards (Visa, Mastercard, American Express)
- Debit and EC cards with NFC
- Passports and ID cards (since 2010 with RFID chip)
- Access cards for offices and hotels
- BahnCards and public transport tickets
How realistic is the danger?
Security researchers have repeatedly demonstrated that card data can be read via an RFID reader from a distance of up to 20 cm. In crowded situations – subway, concert, airport – this is easily possible. In some cases, read card data is sufficient for online purchases without a PIN.
The simplest protective measure: blocking signals
The most reliable protection against RFID skimming is to completely block the radio signal. If the card cannot send a signal, there is nothing to read. The RFID Protection Card – NFC Blocker for your Wallet does exactly that – it reliably and permanently blocks all relevant frequencies (125 kHz and 13.56 MHz) without you having to individually wrap your cards.
What to look for in RFID protection products
- Certified shielding – proven blocking of both frequency ranges
- Complete coverage – no signal should escape sideways
- Durable material – withstands daily use
- Independent tests – e.g., by Stiftung Warentest or specialist media
Further protective measures
- Check bank statements regularly – report unknown debits immediately
- Deactivate contactless payments – possible with many banks via app
- Secure passport separately – especially protect when traveling
Also read: SecuBag – RFID protective bag for Keyless Go drivers | Keyless Go – Relay attack explained
Conclusion
RFID skimming is not science fiction – it is a real threat that can be fended off with simple means. The RFID Protection Card is the most straightforward solution: simply place it in your wallet, and you're done. Protect your data – before someone else does.