Step 3: How to block a RFID tag

Picture of How to block a RFID tag
Luckily RFID tag signals can easily be blocked. This means that you will have the option to use the tag whenever you want, and prevent others from being able to read it.

The signal sent out by a RFID tag is easily blocked by metal. This means that placing the RFID tag inside of a Faraday cage will prevent the information from being read.

There are already two Instructables on how to build RFID blocking containers:

RFID Secure Wallet

Make a RFID Shielding Pouch Out of Trash

Or if you would rather spend money on something you could build, head over to Think Geek for their RFID blocking wallet and RFID blocking Passport Holder.
evilmadcow4 years ago
heck, think geek has more than wallets
matzo3335 years ago
If you have an RFID programmer, you could also zero out the data contained on the chip. that way there's no way to tell whether someone erased it or an incompetent employee forgot to program it when the passport was issued!
BUT if you "kill" the RFID in your passport, it will be invalid. So next time you enter the US, ummm perhaps you will be "security screened"...

Ya kno?

the RFID chip in the passport is specifically used to validate it.

I just renewed my passport, and they sent me an RFID blocking envelope to carry it in. Same with the New Passport Card.
The problem is you want to block it, not destroy it. U can try that if u want to destroy the chip.
Treknology5 years ago
I knew tin foil beanies for credit cards would make a guest appearance!