HEKOOLA Faraday Fabric EMP Shielding, EMP Blanket for WiFi, Cell, RFID Protection with Faraday Tape (43.3" X 78.7", Copper)

I got this faraday fabric to make my own covers for my credit cards, especially when I travel.I created a slip-in sleeve for my credit card using some of this fabric and the accompanying tape. I put my credit card inside the fabric sleeve and tested it at the grocery store’s TAP technology when paying. The Faraday fabric blocked the card from being read by the machine. Once I took the card out of the sleeve, it worked fine.I used regular scissors to cut this fabric and it was as easy to cut as a piece of cotton fabric. It held a finger-press well as I was preparing to tape the ends together. The tape felt like aluminum foil, but with a sticky backside. The tape sealed the end of the sleeve, but the product contains no information about sewing the fabric. Does sewing the fabric (making holes in it) decrease its ability to block wireless frequencies? Should I be applying the tape OVER any sewing stitches? These are the types of questions that I would have expected information about from the manufacturer, but there is no such info provided.My next step will be to sew a credit card holder that I will line in this Faraday fabric. I don’t know how well this will protect me from credit card scanner thieves and similar issues while traveling, but I’m hoping that using this fabric will at least decrease my risk.Overall, the fabric is easy to use but the manufacturer should provide more information on HOW it can be used and how it should NOT be used (or what will make its features less active).

I got this Faraday cloth/fabric because I like to make things myself and customize my RIFD block/EMI block/phone blog/Bluetooth block/satellite blog/GPS block. I got the copper colored version.It comes as one large sheet of cloth 44 inches (111.76 cm) by approximately 40 inches (101.6 cm); one large sheet folded nicely into a 10" x 5.5" (25.4 cm x 14 cm) package. It is heavy, being made of copper, and as you might suppose, is bright copper color. It is very flexible and you can see a little light through one layer but hardly anything through two layers. As cloth it has a nice, smooth, supple "hand"; if you close your eyes you would think it's the kind of cloth a top grade men's suit would be made from. It does not easily take a crease. It does not stretch in either direction but it can be slightly distorted if pulled diagonally which is easily reversed by pulling in the opposite diagonal. For thickness it is 3.5 thousandth of an inch (0.0035 inch/0.0889 mm) measured by micrometer caliper (Amazon). It is woven of very fine copper wire in a subtle diamond pattern which is the same on both sides. The edges do not fray and are not rough. The cloth is very strong; you cannot tear it or pull it apart but is easily cut with ordinary scissors without damage to the scissors.This is electrically conductive material as shown by testing with a volt ohm meter (VOM) and continuity tester: it has negligible resistance between any two distant points on either side as well as from one side to the other. The Amazon description says it contains nickel and polyester fiber in addition to copper; but I don't see any evidence of nickel. To test for polyester fiber I put a flame to the corner of a small piece of the copper Faraday cloth and with little effort it did take flame and was burning but I blew it out. So somehow there is organic material, they say polyester, in the cloth but it does not affect the electrical conductivity. However the burned part is dark brown color, brittle, easily breaks off and does not have the same extremely low electrical resistance as before.Also provided is a generous length (the Amazon description says 394 inches (32.8 feet/10 m) of 1 inch wide copper tape but no instructions as to how to make anything; I'm sure the Internet has all the information you could possibly want about how to construct your own Faraday bags/devices. Of course you can also use the cloth and tape to line the inside of any number of commercially available credit card or computer related cases/backpacks etc.As far as protection from electromagnetic waves, a single layer (the Amazon description recommends two layers) wrapped around my cell phone totally blocked incoming signals.Since the cloth is electrically conductive, you can also make your own "grounding cloth" instead of buying a more expensive commercially available one and customize its size and shape. Naturally you have to read up on how to make the electrical connections (and avoid electrocuting yourself) and how to use it for its alleged health benefits.In Conclusion: highly recommend.

I got this one to shield my guitar from electric noise coming from the PC tower. Wrapped that blanket all around the tower and made sure it touches itself. Absolutely zero difference, noise is still there in full force. So I'm not sure what it's supposed to do, but I'm returning it.

I cant tell you if theres actually any difference between the normal ones and the copper ones, but it does lower the signals like its supposed to.Side note, These Faraday fabrics make a great antenna

This order came with enough fabric to line the cardboard box I am keeping some valuable electronics in. I thankfully have not had to see if it works yet via experiencing an EMP, but I hope that it works well. I plan at some point to put a radio on full volume inside and testing it that way, but I need to get ahold of a suitable radio that will fit in the box first.