was a stored-fare system using magnetic cards of the 22 members of the Passnet Association in the Kantō region

Kanto region

The is a geographical area of Honshu, the largest island of Japan. The region includes the Greater Tokyo Area and encompasses seven prefectures: Gunma, Tochigi, Ibaraki, Saitama, Tokyo, Chiba, and Kanagawa. Within its boundaries, slightly more than 40 percent of the land area is the Kantō Plain....

 of Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

. It was available between October 14, 2000 and January 11, 2008 in 1,000, 3,000 and 5,000 yen varieties.

The Passnet system was superseded by the Pasmo

PASMO

is a rechargeable contactless smart card ticketing system for public transport introduced in Tokyo, Japan, on March 18, 2007.Pasmo is a development of the system used by many non JR railway lines in the Tokyo region...

 contactless smart card

Smart card

A smart card, chip card, or integrated circuit card , is any pocket-sized card with embedded integrated circuits. A smart card or microprocessor cards contain volatile memory and microprocessor components. The card is made of plastic, generally polyvinyl chloride, but sometimes acrylonitrile...

system introduced on March 18, 2007. Sales of Passnet cards ceased from January 11, 2008, and they were no longer able to be used in ticket gates from March 15, 2008. Passnet cards are still be able to be used to purchase tickets from ticket machines after this date.