Suica

The Suica is a card that people can use to pay for train fares and goods at convenience stores in mainland Japan, as well as other store types and regions. Cash amount can be added or removed electronically, simply by hovering the card over a card reader. It is convenient and faster to use than coins and bills, and magnetic stripe cards. The technology used is called RFID, and a chip by Sony is used, called FeliCa.