You probably think that you're protecting your credit card numbers well enough. You probably take care not to use them to shop online and you make sure not to give them to strangers. After all, with all the credit card fraud crimes finding their way into the news these days, you're easily one mistake away from getting your very important personal information stolen. Did you know that someone with malicious intent could easily steal your credit card information just by standing next to you?
This is true. Because a lot of credit cards these days come with RFID chips embedded within them to make contactless payments possible, the added security feature ironically can potentially make your credit card information vulnerable to anyone with the right kind of technology to "scan" your card information so they can use it themselves.
Fortunately, it's relatively easy to interrupt and prevent this from happening to you. This is how RFID blocking passport holders and wallets work: they protect the sensitive information of your credit cards in a material that interrupts radio waves. Legitimate RFID blocking products will block out all of the electromagnetic fields around your credit cards and prevent any kind of transmission between your cards and RFID scanners unless you're the one who's scanning them.
Of course, you don't always need to buy one. If your credit card doesn't have an RFID chip, then good for you. Even if it did, these problems are somewhat isolated; they very rarely happen to people and when they do, it's mostly the high spenders that are being targeted. But then again, the fact that there is a possibility of getting maliciously scanned is worrisome, and if you'd like to keep credit card information safe, then it might be better to invest in an RFID-blocking passport holder.