Multi-Factor Authentication is a security mechanism that verifies your identity using your smartphone or device in addition to your traditional password.
Think of it as adding a second lock to your front door. Even if someone finds out your password, they cannot log in without that second key (your smartphone), dramatically enhancing your account security.
To ensure higher security, please register your authentication methods for Multi-Factor Authentication.
We strongly recommend registering two or more authentication methods in case your primary device is lost or damaged.
This is an important notice regarding security enhancement.
To combat the recent rise in unauthorized access attempts, setting up and using Multi-Factor Authentication (MFA) will now be required when logging into keio.jp.
Consequently, signing in using only a Keio ID and password will no longer be possible. We appreciate your understanding and cooperation in ensuring the safe and secure use of our services.
Implementation Schedule for Mandatory MFA
Guarantors: Late February 2027
The following factors can be registered for keio.jp Multi-Factor Authentication:
Standard Authentication Factors:
Passkey (Biometrics / PIN)
Okta Verify App
TOTP
FIDO Security Key
*FIDO Security Keys must be purchased separately.
Recovery Authentication Factor:
Phone
*Phone authentication cannot be used to log in to the keio.jp portal site.
If you're thinking, "Authenticating twice every time sounds like a hassle...", don't worry!
By setting up "Passwordless" authentication, you won't even need to enter a password. With just a few taps on your smartphone or a quick face/fingerprint scan, you can log in more securely and easily than ever before.
If you are setting up Multi-Factor Authentication, please refer to the "keio.jp MFA Setup Manual."
*Note: You will now be redirected to the common keio.jp Multi-Factor Authentication setup guide site.