From the press release:
East Japan Railway Company (JR East), NTT DoCoMo Inc. (DoCoMo) and Sony Corporation (Sony) today announced that they will offer a new service combining DoCoMo’s i-mode® FeliCa® smart-card handset and Suica, JR East’s IC card train ticket, from January 2006. The Mobile Suica® service will enable i-mode FeliCa handsets to be used as Suica cards.
DoCoMo’s i-mode FeliCa service combines two advanced platforms: DoCoMo’s i-mode mobile internet service for data communications on the go and Sony’s FeliCa smart-card platform for rapid, secure data transmission. The handset is a powerful, multifunctional tool combining mobile communications with diverse functions ranging from financial transactions to opening electronic locks. As of February 12 more than 2 million i-mode FeliCa handsets have been sold.