Does this have to be placed over your cards in your wallet for it to work ?

Easy to Use: Simply place the rfid blocking card next to ID, credit card, debit card, passport for protection.

Does the card use active or passive technology?

No moving parts, no battery, so I would describe it as passive.

How would i know what frequency my cards use? this product won't work with: frequency from 100khz to 125khz.

The best bet is to contact the manufacturer.

Has anyone tested these?

Only testing I been able to do is use them and hope they are really more then a aluminum card. So bad things so far.

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SAITECH IT 5 Pack RFID Blocking Cards, Premium Contactless NFC Debit Credit Card Passport Protector Blocker Set for Men and Women Smart Slim Design Fits in Wallet/Wallet (Black)

SAITECH IT 5 Pack RFID Blocking Cards, Premium Contactless NFC Debit Credit Card Passport Protector Blocker Set for Men and Women Smart Slim Design Fits in Wallet/Wallet (Black)

Product ID: 733118007

Details

Brand
SaiTech IT
Color
black
Material
Polyvinyl
Pattern
Solid
Style
Classic

💳Standard credit card size, ultra-thin 0.025 inch

📡2.4-inch RFID blocking range

🔋Battery-free lifetime protection

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Rp1713817

Duties & taxes included

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Sold byAmazon IndonesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛡️ Stay one step ahead of digital thieves with sleek, silent RFID armor!

TESTED TRUSTED - Verified at self-checkout machines to ensure your contactless cards stay safe from unauthorized scans.
FAMILY READY SECURITY - Pack of 5 cards means you can protect yourself and your loved ones effortlessly.
POWER FREE PROTECTION - No batteries needed—advanced antenna and jamming chip provide lifetime signal blocking.
SLEEK DISCREET DEFENSE - Ultra-thin 0.025 inch design fits seamlessly in any wallet without bulk or weight.
SHIELD YOUR WALLET LIKE A PRO - Blocks all RFID & NFC signals up to 2.4 inches, securing your entire wallet from e-pickpocketing.

The SaiTech IT RFID Blocking Card is a slim, battery-free security solution that blocks RFID and NFC signals within a 2.4-inch radius, protecting your entire wallet from electronic theft. Sized like a credit card and only 0.025 inches thick, it fits effortlessly in any wallet. Tested at contactless payment terminals, this pack of 5 cards offers reliable, long-lasting protection for you and your family in today’s contactless world.

Specifications

ASIN	B09K78VB2J
Additional Features	RFID Protected
Age Range Description	Adult
Amazon Bestseller	#203,250 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #215 in Medical RFID Supplies
Brand Name	SaiTech IT
Closure Type	Open top
Color	black
Customer Reviews	4.6 4.6 out of 5 stars (4,375)
Embellishment Feature	Metal Logo
Form Factor	Slim
Included Components	5 RFID Blocking Cards
Item Dimensions D x W x H	85D x 1W x 55H mm
Item Type Name	Travel Accessory- Travelers Card Sleeves
Item Weight	34 g
Lining Description	Mesh
Manufacturer	SAITECH IT SaiTech IT Private Limited
Manufacturer Part Number	5 Pcs RFID Blocking Card
Material Type	Polyvinyl Chloride
Model Name	Rfid Blocking Card
Model Number	RFID Blocking card
Number of Compartments	1
Number of Sections	1
Pattern	Solid
Pocket Description	No pockets
Product Care Instructions	Wet Wipe Clean
Style Name	Classic
Subject Character	No Subject Letter
Target Audience	Unisex-Adults
Unit Count	5 Count
Wallet Card Slot Count	5
Wallet Compartment Type	Credit Card

Reviews

Y**L

Fortunately, or unfortunately, so far I've never encountered a situation that test/verify the effectiveness of these cards, but I've read quite a number of good reviews from people with actual evidences, so I hope they are working fore real.

1.12.2024

M**C

Cumple su función.

30.01.2026

M**D

شكرا لكم منتج رائع

31.07.2025

A**R

good product

23.03.2023

O**A

Muy útiles para proteger la información ,tamaño igual a una tarjeta de credito

26.03.2026

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Rp1713817

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In stock

Sold byAmazon IndonesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Indonesia.

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