card surfing
noun
1
a moving of custom between credit cards to achieve financial advantage UK, 2000.
2
a criminal act in which a criminal closely observes a person using an automatic cash machine (by looking over his or her shoulder) and notes the personal identity number that is enterered on the keypad; the user's card is subsequently stolen, without making the user aware of the theft, and fraudulent withdrawals of cash are the criminal's reward. Also known as 'shoulder surfing' US, 1992