Why you don't need an RFID-blocking wallet

You can use a myriad of materials that are poor conducts of electromagnetism to block RFID waves — just a few sheets of thick aluminum foil will do the trick. The RFID-blocking vendors will try to overwhelm you with technical terms and specifications, including frequencies and antenna sizes. Aluminum foil works to block them all; you just may need more foil sheets. Do the “official” RFID wallets and other accessories work? Yes and no. Some have been shown to be less reliable than aluminum foil. But even if the RFID blocking products did protect better than Reynolds Wrap, the fact remains that in over a decade, not a single crime involving an RFID-enabled device has been reported in the public domain. I don’t just mean credit card crime. I mean no real RFID-enabled crime ever!