The card is a rechargeable contactless smart card used on the JR West rail network in Japan. The card was launched on November 1, 2003 for usage on the Urban Network, which encompasses the major cities of Osaka, Kyoto and Kobe (Keihanshin). It is now usable on many other networks. The ICOCA area has gradually been expanded, and now includes the San'yo region through the Okayama and Hiroshima urban areas, and some lines in northern Shikoku, San'in and Hokuriku regions as of 2020.