Passkey Setup Guide (iPhone)
You must register biometric authentication on your iPhone in advance.
Note: If you are using the same Apple account as your Mac and have already registered it as an authentication factor for keio.jp on your Mac, no additional registration is required.
1. Setting up Multi-Factor Authentication (iCloud Keychain)
For explanations regarding the images in each step, please refer to the text provided to the right of or directly below the respective image.
1.1. Log into keio.jp
(Register from the Setup Page)
Log into keio.jp using a web browser on your smartphone, and then access the Multi-Factor Authentication (MFA) setup page ( https://keio.okta.com/enduser/settings ).
Tap "Set up" in the "Security Key or Biometric Authenticator" section.
Note: When registering a second or subsequent passkey, the label for the "Security Key or Biometric Authenticator" section will change to "Passkey."
(Register from the Initial Setup Screen)
Access keio.jp using a web browser on your smartphone, and log in with your keio.jp account (ID and password).
1.2. Verify your identity using a security method
(Register from the Setup Page)
Please use one of the standard authentication factors you registered for daily use.
If the device you are currently using does not have any available standard authentication factors, please use phone authentication instead.
If an unintended authentication factor is displayed, click on "Verify with something else" and select the specific authentication factor you wish to use.
If you are unsure how to complete the authentication process, please check the guide below:
How to Log In: https://sites.google.com/keio.jp/kmfa-setup-en/how-to-log-in
(Register from the Initial Setup Screen)
Please proceed to 1.3.
1.3. Set up security methods
(Register from the Setup Page)
Tap "Set up."
(Register from the Initial Setup Screen)
Tap "Set up" in the "Passkey" section.
1.4. Setting up a passkey
Tap "Set up."
1.5. Create a passkey in iCloud Keychain
Tap "Add Passkey."
You will be prompted for Face ID, Touch ID, or your PIN; once authenticated, "Done" will be displayed.
1.6. Check MFA settings
(Register from the Setup Page)
Once authentication is successful, the screen will automatically transition, and the authentication factor will be registered.
We recommend setting a nickname so you can easily distinguish between your accounts and devices.
(Register from the Initial Setup Screen)
If the "Continue" button is displayed at the bottom of the security method setup screen, the Multi-Factor Authentication (MFA) setup using Google Password Manager is complete. You can log into keio.jp by tapping "Continue."
If you have only registered one factor, please register an additional authentication factor.
To make it easier to distinguish between your accounts and devices, we recommend setting up a nickname on the Multi-Factor Authentication (MFA) setup page.
Please Note:
It is possible to register multiple passkeys for the same device or account.
If you delete the most recent passkey, you will no longer be able to log in, even if the setting still appears to be active.
When deleting a passkey, please check the registration date and time of the security methods on the multi-factor authentication (MFA) settings page, and ensure you only delete the older entries.
End of guide