"Enable bank notifications to cut contactless fraud risk Tony Sales, once dubbed Britain's Greatest Fraudster, explains that the single most impactful step ordinary people can take against contactless payment theft is deceptively simple. He states: "if you can get half of those people just to go onto their phone app and put notifications on, if you do that, you will have the biggest impact on vulnerability when it comes to contactless payment than anybody." With real-time alerts, you can call your bank the moment a suspicious charge appears, dramatically shrinking the window criminals have to exploit stolen card data. Most people ignore this free, built-in protection while spending money on wallets and gadgets instead. Source: Tony Sales, Veritasium, How Your Credit Card Works — and How It's Being Hacked"