Signer attachments become documents and allow subsequent signers to review and sign
In GMO Sign Ver.2, files attached by signers become documents so subsequent signers can also view them and apply digital signatures.
Encryption specs change for GMO Sign app and In-person Contract Premium
GMO SignSecurityDeadline Dec 10, 2025
Due to encryption specification changes, communication with GMO Sign may fail on devices running older operating systems or browsers.
Required action
If issues occur with communication or features, update the OS, app, or browser to the latest version, or consider using another device or browser.
Changes
- The specification change is scheduled for December 10, 2025, from 12:00 to 13:00.
- Communication may fail on devices running versions prior to IE/Win8.1, Safari 8/OS X 10.10, Android 4.3.1, or iOS 8.
This summary is independently created by Release Radar and is not an official announcement from the vendor. Please read the official page for accurate details.
More updates
You can now use timestamp auto-renewal and register up to 20 Webhook URLs in GMO Sign
You can now use multiple new features in GMO Sign, such as automatic timestamp renewal and expanded Webhook destination limits.
You can now use AI Flow Option to connect generative AI with GMO Sign via MCP
You can now access GMO Sign contract data and request signatures through generative AI using natural language prompts via MCP.
