• About
  • Terms and Conditions

Sewjournal

~ sew, knit, cook, write – enjoy!

Sewjournal

Tag Archives: RFID

How to make a RFID-blocking card sleeve

27 Tuesday Oct 2015

Posted by sewjournal in Sew journal

≈ 2 Comments

Tags

Credit card sleeve, instructions, RFID, sewing, sewing blog, tutorial

A while ago I made this RFID blocking card sleeve. The new credit cards with chips transmit info to the card reader in a “contactless manner”. Research has shown that although they are not supposed to transmit more than 10cm (4″) away, they actually can be picked up a metre away. Though Sophos security seems to doubt the efficacy of RFID blocking sleeves, I have tried using my card at a “tap and go terminal” inside the sleeve and it blocked it completely so I’m quite happy with it. I thought you might like to make your own too.image

What you’ll need

Two pieces of fabric (preferably batik), some Wonder Under (or similar), some Aluminium foil (the strongest you can buy) and some credit cards (the number you plan to store in the wallet).

image

Step One

Cut your two fabrics and your Aluminium foil to 5″ x 51/2″, and your Wonder Under to 5″ x 11″.

Step Two

Fold your Wonder Under in half, with the glue side inwards and slide your foil in between and iron both the back and the front so that the foil is sandwiched and fused completely.

.image image image

Step Three

Peel the paper backing off the foil on one side.

image image

Step Four

After removing the paper from one side, lie one of your pieces of fabric onto the glue side of the foil and press with an iron (no steam).

image

Step Five

Then remove the paper from the other side and lay the second piece of fabric on top and press with a hot iron.

image image

image

Step Six

Grab the number of credit cards you are planing to put in the wallet. Fold the wallet in half, lay the cards inside and then with an “add a quarter” ruler place the centre line on the edge of the card and then draw a line at the quarter inch mark.

image image image

Step Six

Remove the cards and sew along the marked seam lines.

image image

Step Seven

Trim the side seams and then place a card onto the wallet and fold the wallet top over to desired height. Because we used batiks there is no fraying so we don’t need a top seam. Then trim off the excess along the fold and reinforce the top of the seams by sewing back and forth a couple of times.

image image image image image

Step Eight

Turn the wallet inside out. Pushing the corners out with your fingers. (Don’t use any sharp tools or you may tear the foil.) Then press the wallet flat and pop in the cards!

image image image

As you can see I haven’t used credit cards here and these cards don’t have chips so don’t need the RFID wallet. This is just for illustration purposes.

I’d love to hear how you go if you decide to make your own.

Share this:

  • Facebook
  • Twitter
  • Pinterest
  • LinkedIn
  • Email
  • Print

Like this:

Like Loading...
  • RSS - Posts
  • RSS - Comments

Enter your email address to follow this blog and receive notifications of new posts by email.

Recent Posts

  • I haven’t posted in ages!
  • Constructing the bottom half of the Emperor’s Jewels Quilt
  • Emperor’s Jewels QAYG Block 7
  • Emperor’s Jewels Block 6 Part 2
  • Emperor’s Jewels Block 6 Part 1

Archives

  • November 2017
  • January 2016
  • December 2015
  • November 2015
  • October 2015
  • September 2015
  • August 2015
  • March 2014
  • February 2014
  • January 2014
  • December 2013
  • September 2013
  • July 2013
  • June 2013
  • May 2013
  • April 2013
  • March 2013
  • February 2013
  • January 2013
  • December 2012
  • November 2012
  • October 2012
  • September 2012
  • August 2012
  • July 2012
  • June 2012
  • May 2012
  • April 2012
  • March 2012
  • February 2012
  • January 2012
  • December 2011
  • November 2011
  • October 2011
  • September 2011
  • August 2011
  • July 2011
  • June 2011
  • May 2011
  • April 2011
  • March 2011
  • February 2011
  • January 2011
  • December 2010
  • November 2010
  • October 2010
  • September 2010
  • August 2010
  • July 2010
  • June 2010
  • May 2010
  • April 2010

Create a free website or blog at WordPress.com.

Cancel
loading Cancel
Post was not sent - check your email addresses!
Email check failed, please try again
Sorry, your blog cannot share posts by email.
Privacy & Cookies: This site uses cookies. By continuing to use this website, you agree to their use.
To find out more, including how to control cookies, see here: Cookie Policy
%d bloggers like this: