Introduction: RFID Credit Card Protecter

Picture of RFID Credit Card Protecter

These days credit card information can be taken from you by anyone with a RFID scaner. So lets MacGyver up a RFID signal blocker.

Step 1: Things You Will Need

Picture of Things You Will Need

You will need:

•Aluminum Foil or Copper Mesh (copper mesh is found in the glass of a microwave door)
•Duck-tape
•Playing Cards (2)
•Scissors
•Marker

Step 2: Cut the Aluminum Foil

Picture of Cut the Aluminum Foil

Take a pice of aluminum foil and set a card on one of the corners, then trace around the card. Do that 3 more times, then cut around it. Do that 1 more time.

Step 3: Fold the Aluminum

Picture of Fold the Aluminum

Fold both pieces of aluminum along the lines.

Step 4: Attach the Aluminum to the Cards

Picture of  Attach the Aluminum to the Cards

To attach the aluminum foil to the cards fold the edges around the cards.

Step 5: Tape the Cards Together

Picture of Tape the Cards Together

Tape the two cards together with the playing cards on the outside. Make sure that you dont tape the top, you will still need a side to put your credit card in.

Step 6: Information

1. The more aluminum foil you add the more amount of the signal will be blocked to a point, but copper mesh will protect it more than aluminum foil.
2. This will somewhat protect your card from people caring RFID scanners.
3. This will only somewhat protect a credit card if it has a RFID chip in the card. If the card does not have a chip than there is nothing for a RFID scanner to detect.

Comments

ViYard (author)2017-08-18

How do I know if my card has an RFID cip?

Foxtrot70 (author)ViYard2017-11-19

Here is a pic of the RF ID symbol on a Credit Card. I hope this helps.

Twangybanjobob (author)ViYard2017-08-20

Most newer credit cards have them, on a visa card it has a little wifi symbol on on it and on other cards you will see a gold colored rectangle or square with lines on it.
I hope that was helpful, I don't really know how else to explain it.

tytower (author)2017-08-02

Well actually having made a skimmer I can tell you that just one piece of aluminium cut from say a coffee can seal will stop anything I have made yet.Just one piece in a wallet shields all cards by drawing the signal to the alloy sheet and the chips do not work

Twangybanjobob (author)tytower2017-08-02

Thank you tytower for your response, your right but have you tryed Copper mesh. My thinking behind the Copper mesh was to turn the protecter into a Faraday cage to block the signals.

About This Instructable

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