Osaifu-Keitai
Japanese mobile payment system / From Wikipedia, the free encyclopedia
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Osaifu-Keitai (おサイフケータイ, Osaifu-Kētai), literally "Wallet Mobile", is the de facto standard mobile payment system in Japan. Osaifu-Keitai services include electronic money, identity card, loyalty card, fare collection of public transits (including railways, buses, and airplanes), or credit card. The term "Osaifu-Keitai" itself is a registered trademark of NTT Docomo.
The system was developed by NTT Docomo who released it to the public in 2004 but the system is also supported by other mobile phone operators. It uses Sony's Mobile FeliCa ICs.