4Login is a passwordless MFA platform by Passlogy using tap-pattern and QR-code app login, with a WordPress plugin for secure site authentication.
4Login is an authentication platform built by Passlogy Co., Ltd., a Japanese security company, that replaces traditional password logins with app-based multi-factor authentication. Users authenticate by tapping a matrix pattern or scanning a QR code in the 4Login mobile app (iOS and Android), combining knowledge-based and possession-based factors for stronger security than passwords alone.
The platform also offers a WordPress plugin (4Login for Secure and Smart Access) that lets site owners require 4Login authentication for WordPress logins instead of standard ID/password credentials. Additional capabilities include one-time password login via email, centralized and selective sharing of personal information with connected services, and a broader Passlogy product family covering Windows authentication, PQC-compliant file encryption, and security browser plugins.
4Login targets individuals and organizations in Japan looking to move away from password-based login toward app-based passwordless authentication, including WordPress site operators and developers integrating via the 4Login API.
The 4Login mobile app and core authentication login features are free. A paid Developer Supporter program (¥220/month) is available for early access to new features.
Users authenticate without a password by tapping a matrix pattern or scanning a QR code in the 4Login mobile app, or by entering a time-limited one-time password sent by email.
Yes. Passlogy offers a dedicated WordPress plugin, 4Login for Secure and Smart Access, that replaces standard ID/password logins with 4Login app authentication.
4Login is developed by Passlogy Co., Ltd., a Japan-based authentication and security technology company.