You probably know that criminals have long figured out how to trick people into handing over their credit card information. One way is the skimmer. If you thought you’d never fall for that trick, think again. Turns out, skimmers can look a lot like the reader that unlocks doors that lead to bank machines.
And because it is very difficult to tell the difference and thieves mount cameras over the machines to capture your PIN, it’s good practice to cover your hand while you punch in that code. Here’s an article about it on Gothamist.
And now you know.