Radio Frequency Identification (RFID) has been in bank cards and passports since 2006. It is very convenient and quick at the cashier. They can take your bank details at the swipe of a card and you are on your way.
This ease and convenience is helpful in the store, but not out on the street.
Unfortunately RFID readers aren’t limited to shop keepers. Anyone can buy an RFID reader off the internet quite cheaply. It can be set up in a typical briefcase or bag and then take RFID readings from people in the street. This could be hundreds of unsuspecting card holders every day!
They will protect your bank and ID cards (and passport), so you know your personal information is secure.