Chip and PIN machines are generally safe to use but sometimes criminals will try to watch you entering your PIN into the machine. If they are successful in obtaining the PIN they will then use some sort of distraction technique (often as simple as asking for directions) in order to try to steal your bank card. Once they are in possession of the PIN and the card they can withdraw money from your account. PLEASE COVER THE KEYPAD WHEN ENTERING YOUR PIN AND KEEP YOUR BANK CARD(S) SAFE AT ALL TIMES