Taiwan taipei EASY CARD - recommended if travelling to Taiwan 

The EasyCard is a contactless smartcard system operated by the EasyCard Corporation, which was previously named the "Taipei Smart Card Corporation", for payment on the Taipei Metro (also known as "Taipei MRT", or "Taipei Rapid Transit System"), buses, and other public transport services in Taipei since June 2002, expanded to multiple place of business. Its use has also since been expanded to include convenience stores, department stores, supermarkets, taxis, and other retailers since 1 April 2010.[1] Like conventional electronic fare systems, the card employs RFID technology to operate without physical contact. They are available for purchase at all Metro stations and all chain convenience stores.
source en.wikipedia.o...