Instructables

can I make an RFID blocking wallet using aluminum foil instead of cans?

If aluminum cans can block RFID signals, how many layers of laminated aluminum foil (or, alternatively aluminum tape) would be needed to effectively shield a wallet?

Re-design4 years ago
Depends on the unit.  Some of them are very short range and will be easy to fool and some of them are very strong and will be difficult to fool.

When you get caught stealing/shoplifting you're going to have to pay the price and it's going to be much higher than the price of what ever it is you're trying to lift.

If you have a legitimate reason for asking the question then I wish you'd reveal it cause I can't see any other reason other than you gonna try shoplifting something that will fit in you wallet.
Mr.Fancypants (author)  Re-design3 years ago
Hehe, well a year later I'll answer your question. Haven't checked my messages.

Simply put,
1) I have ALREADY had my identity stolen and 10 years after the guy was convicted I'm still dealing with the fallout. I don't want to go through that again.

2) I dislike the idea of people having the ability to see the contents of my wallet without asking. I have ID with personal info a security card to a high security building and then there's the "I didn't know that had an RFID in it!" problem. Not everyone announces they have put it in and I don't want to be 'broadcasting' without my knowledge.

It hadn't occured to me that the purpose would be to shoplift something that would fit in my wallet lol. I think if that were the case I'd just make a shoplifting pop can :P saves me having to take out my wallet with my ID in it.
Burf Re-design4 years ago
Some of the new credit cards, passports and store discount cards now come with an RFID chip.  I presume the intended purpose of the aluminum is to block ID theft from these cards.
Re-design Burf4 years ago
That would be a valid use that I hadn't thought of.  Thanks.
haugenka3 years ago
As Burf mentioned, above, RFIDs are showing up in all kinds of cards – transit passes, library cards, phone cards, not to mention newer passports and credit cards – many of which store your private data (address, account number, etc). These 'contact-free' cards are very common in Europe and Asia (where people were baffled by our 'old fashioned' magnetic strip credit card).  It's another growing avenue for identity theft. For an informative and entertaining read about it, check out Cory Doctorow's "Little Brother" – buy the book, check it out from the library, or get a free digital copy on the web... And then go get your RFID blocking wallet.
lemonie4 years ago
Why? What RFID devices do you have in your wallet?

L
Pro

Get More Out of Instructables

Already have an Account?

close

PDF Downloads
As a Pro member, you will gain access to download any Instructable in the PDF format. You also have the ability to customize your PDF download.

Upgrade to Pro today!