Contactless card blockers were designed off the back of the uprise in credit card skimming, which is where someone gains access to your personal card details using a card reader when nearby. And while you don’t need one, they can bring peace of mind when travelling. There are several products you can buy to help stop card skimming, in the form of wallets, purses, sleeves and cards. They work to protect your debit and credit cards along with any driving licences and passports to help prevent against credit card fraud.