# Osaifu-Keitai

Canonical: https://web4.xpay.bi/en/wiki/wp-en-13415994/

Language: en

Published: 2026-10-24T18:10:05.408Z

Updated: 2026-10-24T18:10:05.408Z

Osaifu-Keitai (おサイフケータイ, Osaifu-Kētai), which means "Wallet Mobile", is the 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.

## Key facts

## Overview

Osaifu-Keitai (おサイフケータイ, Osaifu-Kētai), which means "Wallet Mobile", is the 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.

## Operators

NTT docomo Group: i-mode FeliCa KDDI (au/Okinawa Cellular): EZ FeliCa SoftBank Mobile: S! FeliCa Willcom: WILLCOM IC Service

## Advantages

FeliCa, developed by Sony, is the standard technology used for Japanese smart cards. Many of these cards accept Osaifu-Keitai (Mobile FeliCa) system as well, or plan to accept it in the future. Osaifu-Keitai can provide more convenient services than plastic FeliCa cards. For instance, it can automatically recharge itself via the Internet, or provide the latest information. It can also be used as a ticket for an airplane or an event, by downloading an electronic ticket. Unlike plastic cards, a single Osaifu-Keitai phone may accept multiple applications, each equivalent to different cards.

## Disadvantages

Osaifu-Keitai provides many functions on a single mobile phone. Therefore, there is a great risk if the phone is lost, broken, or stolen. Osaifu-Keitai basically functions even without radio transmissions, so the applications can not be terminated just by closing a phone account. A user has to contact each service provider to stop all the functions. There are some phones that can lock the functions via a phone call or an E-mail. Since Osaifu-Keitai can function as identity card (such as member card, company card, or keycard), there is also a risk for those who authenticate it.

## See also

Mobile payment Electronic money FeliCa

## External links

(in English) Osaifu-Keitai from NTT DoCoMo official website (in Japanese) EZ FeliCa from au official website (in English) S! FeliCa from SoftBank Mobile official website (in Japanese) WILLCOM IC Service from WILLCOM official website (in English) FeliCa from Sony official website

## Sources

- Osaifu-Keitai · Wikipedia: https://en.wikipedia.org/?curid=13415994

Source: Wikipedia contributors — https://en.wikipedia.org/?curid=13415994&oldid=1323205857

Licence: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/

Adaptation notice: Reformatted for XPay; the source may be abridged, restructured or translated. Consult the cited revision for the original.