Passlogy Co., Ltd. is a Japanese information security company focused on identity authentication and protecting access to digital services. Its stated aim is to help make the IT society safer through domestically developed authentication technology.

The company develops and provides several security products for organizations and users, including PassLogic, a multi-factor authentication system available in a cloud edition, and 4Login, an identity verification service used in online campaigns and other participation-based experiences. Its product lineup also includes Cryptan, file encryption and decryption software, with a post-quantum cryptography-compatible edition announced for Windows. Passlogy’s Smart Badge has also been adopted for identity verification in online benefit distribution.

The company supports authentication integrations, including single sign-on with Azure Virtual Desktop, and its cloud authentication service supports NEC web-based facial recognition without requiring a dedicated app. Passlogy shares product updates, adoption examples, and company information, and works with technology and sales partners. Its offerings address authentication, encryption, and secure access needs across business and digital environments