Passwordless File Lock Service

Kagisuru is the file encrypt service that encrypts files so only the specified recipient can open them by simply entering their email address.

Let's try it out with inputting your email address!

Basic usage is free. We'll send the one time code to you

Services

Free for basic use

Lock file

You can lock a new file.

Securely send contracts, drawings, and quotes

E2E Encryption

No password sharing required

Unlock file

You can unlock the locked file.

Receive files without password

You can add a link to your email signature to receive files securely without a password.

Features

High Security

Uses the same high-security encryption methods as online banking and My Number cards, with one-time code authentication and biometric verification ensuring only the intended recipient can open files.

Superior Convenience

Share via email attachments, business chats (Slack, Teams, LINE), and existing file storage services (Google Drive, SharePoint). Improve security levels without changing existing workflows.

Innovative Approach

Japan's first file encryption service using passkey technology. No prior setup required for recipients, and works even with recipients who don't have a Kagisuru account.