Yes, RFID-blocking wallets can absolutely go through airport security in 2026. These wallets contain a thin layer of metal (usually aluminum or nickel) designed to block radio frequency signals, and while they might show up as a dark or opaque object on a standard X-ray machine, they do not cause any alarm or technical issues for the scanners. TSA and international security agencies are very familiar with these items. If your wallet is particularly thick or contains a lot of metal, a security officer might occasionally ask to inspect it manually or request that you take it out of your pocket and place it in a bin, but it is not a prohibited item. In fact, many travelers prefer them for added security in crowded terminals to prevent "electronic pickpocketing." The metal used in most RFID wallets is too thin to trigger a walk-through metal detector, so as long as you place it in your carry-on or a scanning bin as directed, you will face no delays or complications.