Universal ID Overview
The ID5 Universal ID is a shared, neutral identifier that publishers and ad tech platforms can use to recognise users even in environments where 3rd party cookies are not available or blocked. ID5 enables publishers to create and distribute a shared 1st party identifier to the entire ecosystem. Ad tech platforms that connect with ID5 can decrypt the Universal ID and improve their user recognition capabilities. The ID5 Universal ID is designed to respect users' privacy choices throughout the advertising value chain.
How does the ID5 Universal ID work?
The ID5 JS API is an open-source library available on Github: https://github.com/id5io/id5-api.js. All documentation for building and installing the library will be maintained in Github, but please reach out if you have any questions or need help.