Connect multiple devices, sessions, and engagement data to the same users.
What is User-ID views?
A User-ID view is a special reporting view that only displays data from sessions in which you send unique ID and related data to Analytics. Analytics interprets each unique user ID as a separate user, which provides a more accurate user count in your reports. When you send Analytics an ID and related data from multiple sessions, your reports tell a more unified, holistic story about a user’s relationship with your business.
To analyze all of your data, use a different view.
With a User-ID view, you can analyze the segment of traffic with an assigned ID separately from your other traffic. In this type of setup, you can analyze how signed-in users interact with your content, so you can find out more about how you acquired these users, what devices they use for different types of engagement, and how many sessions it takes to convert.
User-ID views include a set of Cross Device reports, which aren’t available in other reporting views. These reports give you the tools you need to analyze how users engage with your content on different devices over the course of multiple sessions.
References:
User-ID Coverage report
- User-ID Coverage report
- What the User-ID Coverage report tells you
- Limitations of the User-ID Coverage report
Refer: https://support.google.com/analytics/answer/3123670?hl=en
About the User-ID feature
- How User-ID works