Herald API

The Herald API provides proximity detection and data exchange between mobile phones, wearables, beacons and other devices. This can be used for a variety of applications.

Read about Herald

OpenTrace is a Digital Contact Tracing and Exposure Notification whitelabled end-to-end system, powered by Herald, that supports Public Health Authorities in responding to disease.

Read about OpenTrace

Blog Highlights

Singapore's GovTech donates OpenTrace to Linux Foundation Public Health's Herald Project
Why Digital Contact Tracing is still needed
Why Digital Contact Tracing is still needed
We’re now over a year since the first national lockdowns due to SARS-CoV-2 (COVID-19). In this post we look to the continued need for Digital Contact Tracing (DCT), and where the technology is going next.
Version 2.0.0 released
Why measuring Distance and Risk accurately is important
Why measuring Distance and Risk accurately is important
Herald allows for very regular Bluetooth RSSI readings. These can be used to estimate distance. In this blog we discuss why this is important, and what this information can be used for, and how we provide an accurate way of doing this in Herald.
Code repositories migrating soon
Code repositories migrating soon
As part of Herald’s formal adoption by the Linux Foundation we’re about to start migrating our code repositories, website, and communication channels. This blog gives you a ‘heads up’ on the changes coming soon.
Website redesigned
Website redesigned
The Herald website has been redesigned to make it easier to find and consume relevant information.


All Herald works are Copyright 2020-2021 Herald Project Contributors

The code for Herald is Apache-2.0 licensed. Our hardware designs are licensed under the CERN Open Hardware License - Permissive - V2. The documentation for Herald, including this website, is available under the Creative Commons Attribution 4.0 International Public License.

See LICENSE.txt and NOTICE.txt for details.

The Herald Project Team

Herald Project is released as open source software and provides community support through our GitHub project page. If you encounter an issue or have a question, feel free to reach out on the GitHub issues page for Herald Project.

The Herald project team welcomes contributions from the community — please see our contributing documentation.

Getting Started

To help you get started, see the documentation.