You probably have heard about the increasing incidents of various kinds of fraud transactions from ATMs.
One way - the theft of credit card numbers, along with pin-codes using devaysa called "skimmer" and a miniature camera. In the photos below you can see how it all works near.
The skimmer is attached directly to the card slot, it is almost invisible and is designed to read data from the card, well, the camera is pointed at the keyboard and removes the recruitment process PIN-code. Here's a simple system, also very successful functioning. So ... be careful, or risk being left without money in the account.