GitHub has introduced a feature that displays when commits and tags are signed with a GPG key, providing an extra layer of security by verifying the source of contributions. Users can now see a badge indicating if a signature can be verified using any of the contributor’s uploaded GPG keys, ensuring that contributions to software projects come from identified sources. This enhancement is particularly beneficial for open-source projects and companies that require verification of commit authenticity. Users interested in utilizing this feature can upload their GPG keys via the keys settings page on GitHub and consult the GPG documentation for guidance on generating and signing with a GPG key.