Simple RFID Blocking Wallet
Intro: Simple RFID Blocking Wallet
This instructable is for how to make a very simple yet effective RFID-blocking pouch using materials you already have at home.
In the last few years, there has been a rise in crime involving people going around with RFID readers and stealing people's credit card information without the victims even realizing it. Having an RFID-blocking wallet is the simplest and most effective measure to prevent this from happening to you.
RFID (Radio Frequency ID) is a technology that allows a reader to get an identification from a passive device by reading the device-specific response to a band of radio frequencies. Just by being near the reader, a device with an RFID tag or chip can be read wirelessly and instantly. The advantage of this is convenience. For example, you can now pay the bus fare by tapping a pre-loaded card on an RFID reader when you step on the bus. Many credit cards now have the ability to pay by tapping on an RFID reader -- no swiping or inserting necessary. The disadvantage of this is how conveniently easy it is for thieves to get your credit card information (or more). And worse, they can do it right in front of you and you won't even realize it!
Luckily, you can protect yourself in minutes by making yourself a simple RFID-Blocking Wallet!
(NOTE: I have tested this using my RFID bus pass on the bus, and verified that the RFID reader was not able to read the card while it was inside this pouch. It worked exactly as intended.)
STEP 1: Materials
All you need is:
- Duct Tape
- Clear Packing Tape
- Aluminum Foil
- Scissors
(The important part is the Aluminum Foil -- its purpose is to create a sort of Faraday Cage around the finished pouch, which blocks / attenuates any electromagnetic signals (i.e. RF signals) coming from outside the pouch.)
STEP 2: Duct Tape
Lay down duct tape so that the strips overlap slightly and create a sheet. Make this larger than you will need the finished pouch to be.
STEP 3: Aluminum Foil
Lay the aluminum foil [carefully] onto your duct tape sheet. The aluminum foil should lay flat for best results.
STEP 4: Packing Tape
The final layer of the material is the clear packing tape. This protects the aluminum foil and prevents the metal from touching the chips on credit cards.
Lay the clear packing tape onto the aluminum foil side. Like you did the duct tape, overlap the strips slightly. Cover the entire area that has duct tape on the opposite side.
STEP 5: Cut to Size
Trim away the edges to create a rectangle. Then, using a credit-card-sized card, cut the material so that it will be just larger than a credit card when folded in half.
STEP 6: Tape Edges
Finally, to close the pouch, duct tape the edges and trim the excess away.
STEP 7: Done!
You're done! Put your credit/debit cards in here, and if you'd like put it in your wallet. Now your cards are safe from thieves who use RFID scanners to steal credit card info.
(Although the one I made worked, please make sure to try out your own pouch before trusting your cards in it!)
I hope you found this instructable useful! If you have any other ideas or modifications from this, please post them in the comments, I'd love to hear them!
117 Comments
chuck.bade 4 years ago
Ekke69 2 years ago
chuck.bade, du kanske kan designa RFID-system, men modern
brottslighet tycks du inte förstå dig på.
Jag vet dock inte om det fungerar som skydd med lite aluminiumfolie och lite tape, som visas här ovan av "kgklinker".
davidd6 4 years ago
'BillH 4 years ago
Using 4 strips of duct tape is not really needed, as I did a third one using just 3 strips of duct tape this way and I also used an aluminum soda pop can in place of the aluminum foil to see if it could be done and it does work and looks pretty good as well.
I cut 2 strips of duct tape approx 8 inches in length and then using an older pair of sissors I cut the top of the aluminum soda pop can off, then cut down the length of the can to the bottom and then cut the bottom off.
Once the bottom is removed, I then used the edge of my picnic table to rebend the small sheet of aluminum as flat as possible.
I took the 2 strips of duct tape and over lapped them according to the directions above and placed the once soda pop can aluminum sheet on the sticky side of the duct tape and trimmed the aluminum to fit the tape on all 4 sides.
I then used the clear packing tape on the aluminum can sheet as I did with the aluminum foil.
I then took 2 credit cards and layed them end to end and cut the end to give enough room for the cards to fit inside and I then using 1 card for measurement side to side trimmed the width.
I then folded this in half and cut 2 more pieces of duct tape to seal the edges with and trimmed them after the edges were sealed, I then cut the last piece of duct tape slightly longer than the length on both sides and used the extra to seal the top edges with this and it looks a bit better this way than without having the top edges sealed.
Bright Idea 4 years ago
jakekaiser 4 years ago
cer2010 4 years ago
Alaskan Bev 4 years ago
GregS261 4 years ago
I just had my card cloned and the card company told me it was stolen
at a gas pump. They told me never pay at the pump!
yrralguthrie 4 years ago
"...In the last few years, there has been a rise in crime involving people going around with RFID readers and stealing people's credit card information without the victims ever realizing it..."
A popular tale, I'm not sure how accurate it is. Most theft of credit card information by RFID readers is done with a static reader at a machine where a credit card is used. Even those not so much anymore. They were too easy to detect. Credit card theft by a roving RFID reader is about as likely as winning a lottery. Far and away the majority of credit card theft is done via the internet. It's a little penny-wise and pound-foolish to use such a wallet and then use a normal browser.
bgipson1 4 years ago
Bearded Countryman 4 years ago
mikey51 5 years ago
I recently bought that copper mat for BBQ grills and was wondering if that type of woven copper sheet would also work?
kgklinkel 5 years ago
Theoretically woven copper should work, since the weaves are smaller than the wavelength, but I can't say for sure. Make one and try it out, because now I'm curious!
Captain Nemo1 5 years ago
SunilN19 5 years ago
syfr 5 years ago
Captain Nemo1 5 years ago
I've made similar faraday card wallets using copper cloth, cell phone holders, and passport holders. I have ocassionaly experienced 'leakage' with the cell phone when the shielding doesn't wrap around the seams or have a flap. Just to be on the safe side, I now do the same with all my Faraday cages.
Cheers
Disasterific 5 years ago
jeggeling1978 5 years ago
There is no need to worry as all cards are known as passive RFID devices.
there is no power in a card so there is nothing to short.