IIJ SmartKey app icon

IIJ SmartKey

The IIJ SmartKey app produces One-Time Password that conform to TOTP standards.

Internet Initiative Japan Inc. · jp.ad.iij.smartkey2

Not rated yet 50K+ downloads v2.1.7 5.4 MB Android 4.0.3+ PEGI 3 · Everyone

  • Signature matches the Google Play version Details

At a glance

Latest version
v2.1.7 (16)
Updated
Feb 10, 2026 (8 months ago)
APK size
5.4 MB
Requires
Android 4.0.3+ (API 15)
CPU support
x86 32-bit, x86 64-bit, ARM (legacy), ARM 32-bit, ARM 64-bit, MIPS, MIPS 64-bit
Category
Tools (app)
Permissions
13 (3 sensitive)
Website
www1.auth.iij.jp/smartkey/help_v2.html
Developer contact
[email protected]
Privacy
Developer's privacy policy

About this APK

IIJ SmartKey is an app by Internet Initiative Japan Inc. in the Tools category. It includes native code for x86 32-bit, x86 64-bit, ARM (legacy), ARM 32-bit, ARM 64-bit, MIPS and MIPS 64-bit, so it runs on practically every phone.

Since version 2.1.5, the APK grew from 4.3 MB to 5.4 MB. It asks for 13 permissions, 3 of them sensitive: camera, find accounts on the device and modify shared storage. It asks for the same permissions as version 2.1.6.

What's new in v2.1.7

* Add support for Android 15 (API Level 35). * Add support for Google's new view specifications (Edge-to-Edge display).

Description

From the listing uploaded by “appupdater”.

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 authentication 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/ . * To use slide authentication, you must register your device. * Slide authentication requires support for TLS 1.2 or later. Please use Android 5.0 or newer. ■ Special Features * Protects against unauthorized access by allowing the user to lock the app using a 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/) 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. ■ 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/agreement_v2.html ■ To Service Providers If you are considering adding slide authentication to your service, please inquire through the URL below. ----- Mentioned company names and service names are the trademarks or registered trademarks of their respective companies.

Version history

3 versions are listed, going back to v2.1.5.

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

  • Signature matches the Google Play version Checked by the source store on Feb 10, 2026.
  • Certificate issued to “Internet Initiative Japan Inc.” This is the certificate of the Google Play version.
  • Same certificate as the 2 other versions checked

Store checks and file details

  • Developer signature verified Feb 10, 2026
  • Validated against Google Play Feb 10, 2026
  • Signed byOU=Product Division, O=Internet Initiative Japan Inc., L=Chiyoda-Ku, ST=Tokyo, C=JP
  • Signing certificate (SHA-1)82:92:0F:96:89:3C:4F:86:50:53:81:02:8E:CF:FC:C5:6C:9E:C1:2D
  • File MD5466d89bae03f690f79d2c3a95d6cdced
  • Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (13)

IIJ SmartKey requests 13 permissions, 3 of them sensitive.

Required hardware & features

IIJ SmartKey APK: questions and answers

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the IIJ SmartKey APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 466d89bae03f690f79d2c3a95d6cdced.

Tags

More Tools apps