In the digital age, where technology has become an indispensable part of our everyday life, we face new challenges and threats. While we used to only worry about physical pickpockets who would steal a few bills from our wallets, today we are faced with digital thieves who can "scan" our cards in an instant and access our financial resources without ever physically touching us. This invisible threat is called "skimming" and has become one of the most common forms of theft in the urban environment. So how does this mysterious technique work and how can we protect ourselves from it? How do I protect myself from credit card skimming?