# IIJ SmartKey

> Generates TOTP one-time passwords and supports slide authentication for enhanced security. (iPhone/iPad app by Internet Initiative Japan, Inc..)

- Source: https://appshunter.io/ios/app/iij-smartkey/id974476420 (this page in markdown: same URL + `.md`)
- Developer: [Internet Initiative Japan, Inc.](https://appshunter.io/developer/444664358)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 12.0 · 19 MB
- Languages: American English, Japanese
- Released: 2015-04-01
- Data updated: 2026-08-17
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/iij-smartkey/id974476420/reviews.md

## What is IIJ SmartKey?

Only enterprise user needs to register your device.
You can skip registering your device, if you don't need it.

The IIJ SmartKey app produces one-time passwords that conform to TOTP (RFC 6238) standards and can be used in the 2-step verification processes of a variety of online services supporting TOTP.
Strengthen your online service security by linking this app, installed to your smartphone device, with your ID/password verification processes.

Slide authentication can be used (ver 2.0).
When logging in to a service that supports slide authentication, you will receive a push notification on your smartphone. Then you can pull the service icon for 2-step verification.
For details, please visit http://www.iij.ad.jp/biz/smartkey-m/ (Written in Japanese).

* To use slide authentication, you must register your device.

■ Special Features
* Protects against unauthorized access by allowing the user to lock the app using a Touch ID or passcode.
* Supports device changes and data backups by handing over settings between devices.
* Compatible with the Google Authenticator (TOTP authentication).
* Supports slide authentication.
* Easy to see and read, simple and refined design.

■ Confirmed Supported Services (TOTP authentications)
* Amazon Web Services
* Dropbox
* Evernote
* Facebook
* GitHub 
* Google Accounts
* Google Apps for Work
* IIJ Omnibus
* IIJ Secure MX Service
* Microsoft Accounts
* Slack
* WordPress.com
■ Confirmed Supported Services (Slide authentications)
* Additional details on available services is expected soon.

■■ Please make sure to read the information below before using the app.
* When switching devices, please check the app help page (https://www1.auth.iij.jp/smartkey/en/help_v2.html) before transferring service settings from your old device to the new one.
* Please ensure that you confirm service restoration procedures for the various online services you utilize in advance to protect yourself against cases in which you are unable to complete the 2-step verification process due to device loss or accidental deletion of service settings.
* When backing up this app to iTunes, it is necessary to encrypt the backup files. This app does not support backups to the iCloud service.

■User Agreement
All users of this app must consent to the User Agreement found below before using the app.
https://www1.auth.iij.jp/smartkey/en/agreement_v2.html

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Mentioned company names and service names are the trademarks or registered trademarks of their respective companies.

## Key features

- Generates TOTP one-time passwords
- Supports slide authentication
- App locking with Touch ID/passcode
- Cross-device data backup
- Compatible with Google Authenticator

## Recent user reviews (10 of 20)

All indexed reviews: https://appshunter.io/ios/app/iij-smartkey/id974476420/reviews.md

### 5/5 — 終わったアプリが復活

*2025-03-07*

何年も放置されていて死んだと思っていたアプリがまさかの2025年3月に更新し最新のiOS18まで対応！
このアプリがいいのは二段階認証をQRでエクスポートができるところです。タブレットやパソコン、家族のスマホに…と複数機種に二段階認証を覚えさせるのがQRコードを生成して簡単にエクスポートが出来るのが神です。

### 2/5 — デバイス登録できないと思ったら

*2025-02-10*

当方iOS。このアプリの通知をオンにしてアプリを再起動することで、デバイス登録をいざ完了しようとした時の「登録エラー」が解消されて登録できました。
ヘルプを読んだら書いてありました。よく読めと言われればそれまでですが「通知をオンにしよう」にたどり着けるようなエラー文言をその場で出して欲しいです……

### 1/5 — 最悪

*2022-01-27*

久しぶりに開いたら、『smartkey push通知の設定更新に失敗しました』と出で、何もできない。設定を確認しても問題無し。どうすりゃいいんだよ！ふざけるな。

### 1/5 — 引き継ぎエラー

*2021-06-13*

何度やってもバグって画面進まず引き継げずに機種変後に使用不可

### 1/5 — 立ち上がりません

*2021-04-01*

早急に最新OSに対応してください。
アプリが立ち上がらず落ちます。

### 1/5 — 使えない

*2021-02-11*

アプリを開くことすらできない

### 1/5 — 使えません

*2020-12-18*

認証メールが届きません。海外SMSの拒否はしてないのに。使えないのでどうしようもありません

### 1/5 — iPhoneアップデートから使えなくなった

*2020-12-06*

iPhoneアップデートから使えなくなった。
直ぐに修正してください。

### 1/5 — 起動しない

*2020-12-05*

アップデート後起動しなくなって
すぐ落ちる。
最悪です。
1分1秒を争っている途中なので
すぐ対応してもらいたい。

もう使いません。

### 1/5 — 使えない

*2020-11-30*

突然起動しなくなった。

## Frequently asked questions about IIJ SmartKey

### What is IIJ SmartKey?

IIJ SmartKey is a utility app that generates one-time passwords (TOTP) for two-step verification processes. It helps strengthen your online service security by adding an extra layer of authentication beyond your password.

### How does IIJ SmartKey enhance security?

It provides one-time passwords that change frequently, making it difficult for unauthorized users to gain access even if they have your password. It also offers app locking with Touch ID or a passcode for added protection.

### What is slide authentication in IIJ SmartKey?

Slide authentication allows you to log in to supported services by receiving a push notification on your smartphone and then sliding the service icon. This simplifies the two-step verification process.

### Can I use IIJ SmartKey on multiple devices?

Yes, IIJ SmartKey supports device changes and data backups by allowing you to hand over settings between devices. Ensure you follow the app's help page instructions for transferring service settings.

### Is IIJ SmartKey compatible with other authenticator apps?

IIJ SmartKey is compatible with Google Authenticator, meaning it generates TOTP codes that can be used with services that support Google Authenticator.

### Does IIJ SmartKey have ads?

No, IIJ SmartKey does not contain advertisements. It is a free application focused on providing security features without interruptions.

### What services are supported by IIJ SmartKey?

IIJ SmartKey supports TOTP authentication for a wide range of services including Amazon Web Services, Dropbox, Evernote, Facebook, GitHub, Google Accounts, Microsoft Accounts, and Slack, among others.

### How often is IIJ SmartKey updated?

The app was last updated on February 27, 2025, with version 2.2.0. This indicates regular updates to maintain functionality and security.

## Version history (last 5 releases)

### 2.2.0 — 2025-02-27

* Added support for iOS 16, 17, and 18.
* Dropped support for iOS 15 and earlier.

### 2.1.1 — 2018-05-11

This app has been updated by Apple to display the Apple Watch app icon.

* Only enterprise service users need Device Registraion.
   You can skip registering your device if you don't need.
* Improvements for words in app

### 2.1.0 — 2017-11-06

Add IIJ service icon.

### 2.0.2 — 2016-11-25

* Bug Fixes

### 2.0.1 — 2016-03-28

Operation of two-factor authentication via TOTP has been tested for IIJ Omnibus services and IIJ secure MX services.
* Added support for slide authentication. 
* Bug Fixes

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## More apps by Internet Initiative Japan, Inc.

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All apps by Internet Initiative Japan, Inc.: https://appshunter.io/developer/444664358

## Related topics

[iijmio](https://appshunter.io/ios/topics/iijmio)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-17.*