Having purchased an Armourcard, I decided to put it to the test. A Visit to Woolworths Supermarket and spoke with the Customer Service Manager to explain what I wanted to do. I purchased some produce, had them scanned and placed the Armourcard on top of my credit card and passed them both over the “pay wave” scanner. IT WORKED! The red LED light flashed on the Armourcard effectively jamming the scanner. I tried several times with the same result. I finally removed the Armourcard in order to pay for my purchase. Very satisfied with my Armourcard.