By RFID MFG Editorial Team · Updated June 15, 2026
The risk it addresses
As contactless payment, smart ID and access cards become universal, so does the theoretical risk of "skimming" — an unauthorized reader trying to read a card through a bag or pocket. RFID blocking neutralises that by interfering with reads at 13.56 MHz.
Passive vs active blocking
Passive shielding uses conductive material to absorb and detune the reader field, needing no power. Active cards contain a tiny circuit that emits a disrupting signal when it senses a read attempt. Both stop nearby contactless cards from being read silently.
Cards, sleeves and wallets
A blocking card sits in a wallet and protects the cards around it. Sleeves wrap individual cards or passports. Wallets and card holders build the shielding into the lining for everyday protection. All can be branded — popular as bank and corporate giveaways.
Blocking options
| Product | How it protects | Best for |
|---|---|---|
| Blocking card | Shields the whole wallet | Banks, promotions |
| Sleeve | Wraps one card/passport | Travel, giveaways |
| Wallet / holder | Shielded lining | Everyday carry |
Related reading
Frequently asked questions
Does RFID blocking really work?
Yes — a properly made passive shield or active jamming card prevents nearby contactless cards from being read at 13.56 MHz. Independent of brand, the physics of shielding the field is sound.
Do I need to block every card?
One blocking card or a shielded sleeve/wallet protects the contactless cards stored with it; very large wallets may benefit from a shield on each side.
Can blocking cards be branded?
Yes, they are fully printable and widely used as bank and corporate promotional gifts.