By RFID MFG Editorial Team · Updated June 14, 2026

In short: Every contactless card is always ready to chat. RFID MFG’s new blocking card makes sure it only chats with readers you actually meant to tap.

Every contactless card in your wallet is, technically, always ready to talk — to payment terminals, to door readers, and unfortunately to anyone who walks past with a hidden reader. As tap-to-pay, smart ID and wireless access become everyday habits, that uninvited conversation is the risk. RFID MFG’s new blocking card is designed to end it.

The wallet with a bodyguard A hidden reader tries its luck. The blocking card answers for everyone. the "customer" 13.56 MHz — BLOCKED your cards, unbothered One card in the wallet shields the cards around it
The hidden reader gets exactly one answer — and it isn’t from your bank card.

Slip one card into a wallet or cardholder and it disrupts unauthorized reads at 13.56 MHz, so the cards beside it cannot be silently scanned. No app, no pairing, no maintenance — just a printable, everyday card format that banks and brands can hand to customers as peace of mind with a logo on it.

Two bodyguards, two styles Same job — stop unauthorized 13.56 MHz reads. Very different personalities. PASSIVE — the monk absorbs and detunes the field No battery. Ever. ACTIVE — the bouncer emits a disrupting signal Battery included VS Both fit a normal card slot. Both take your branding.
Passive absorbs and detunes the field; active answers back with a disrupting signal. Same card slot, same branding, very different temperament.

Passive vs active blocking cards

TypeHow it worksPower
Passive shieldDetunes/absorbs the fieldNone needed
Active jammerEmits a disrupting signalBuilt-in battery

Key takeaways

  • Protects a whole wallet from contactless skimming
  • Passive shielding or active LED-jamming versions
  • Fully printable for bank and brand promotions
  • Lightweight, everyday card format

Related products & guides

RFID blocking card →RFID blocking guide →Blocking wallet →

Frequently asked questions

How does an RFID-blocking card work?

It either absorbs and detunes the 13.56 MHz field (passive) or emits a disrupting signal (active), so nearby contactless cards cannot be read without your knowledge.

Does one blocking card protect all my cards?

A single card placed in the same wallet or sleeve shields the contactless cards around it; very large wallets may benefit from one on each side.