RFID blocking card that shields contactless bank and access cards

RFID Blocking Cards and Card Holders

One card in the wallet shields every contactless card next to it — no sleeve per card.
Credit-card size and 0.8 mm thick, so it takes an existing slot.
No battery on the passive version; active jamming versions available.
Bamboo, RPET and aluminium bodies for brands with a sustainability line.
Reads as a serious gift from a bank, an insurer or an IT company.

Categories ID Solutions, Mobile and Tech Accessories

Everything else we make that involves RFID is designed to be read — wristbands at a gate, tags on a crate, cards at a door. This is the other half of the same conversation: an object whose entire job is to stop a reader working.

How it works

The card carries a resonant circuit tuned to 13.56 MHz. Held near a reader it absorbs and re-radiates the field, so the reader cannot establish a clean link with any card in the wallet. One card protects the whole stack, which is the practical advantage over per-card sleeves that people stop using after a week.

Passive or active

Passive shield — no battery, nothing to fail, works forever. Covers the cards immediately around it.
Active jamming — a powered version that emits interference across a wider area. More effective, more expensive, and the battery eventually ends.
Aluminium holder — a physical enclosure rather than a jammer, with a slide mechanism to push a card out.

Who it suits

Banks and insurers, where the gift and the message align exactly. IT and cybersecurity companies for trade fairs. Corporate security and compliance teams. Travel operators, where the pitch is pickpocketing on holiday. It is also one of the few conference giveaways people actually keep, because it lives in a wallet.

Branding

The card face is a full-colour UV print, edge to edge — it behaves like a printed plastic card. Bamboo cases take laser engraving; aluminium holders take engraving or doming.

Specifications

Protects: 13.56 MHz contactless payment, transport and access cards
Card: 85 × 54 mm, about 0.8 mm thick
Bodies: printed card, bamboo case, RPET or aluminium holder
Minimum order: 100 pieces

Honest note: a blocking card raises the effort required, it is not a security certificate. Contactless fraud at a distance is rare, and the real appeal of this product is that it makes an abstract worry feel handled.

The reading side of the same technology: RFID wristbands, dual-chip woven wristbands and hard PVC RFID tags.

Common questions

Do we need one per card or one per wallet?

One card protects the whole stack. That is the practical advantage over per-card sleeves, which people stop using after a week.

Passive shield or active jamming?

Passive has no battery and nothing to fail — it works forever and covers the cards immediately around it. Active jamming is powered, and worth specifying only when that extra coverage matters.

Which cards does it actually protect?

13.56 MHz contactless cards. The shield is credit-card size at 0.8 mm, or you can take it as an aluminium holder or bamboo case, from 100 pieces at 1.33 EUR.