Using the top navigation bar, click the feature ‘User Look-Up.’ This is where you can get a live stream of events tracked in the last 24h.
![](https://uploads-us-west-2.insided.com/amplitude-en/attachment/305e0eee-bc49-442e-addc-bd9fef68ae58.png)
Select a specific user, and you’ll see the user profile, user ID, amplitude ID, and all the device IDs that Amplitude has seen, including other information (i.e.: demographics, SDKs, when we first saw the user, live event stream, etc.)
![](https://uploads-us-west-2.insided.com/amplitude-en/attachment/5e02b06a-3c26-4341-bb6a-684bf5c76209.png)
If you see a User ID, it's because it has already been set. If the value is null, the User ID has not been set.
![](https://uploads-us-west-2.insided.com/amplitude-en/attachment/0efdb852-c153-40b8-bb8e-d9349dafd3db.png)
There’s also a raw version that you can access for debugging purposes by toggling to ‘Raw.
![](https://uploads-us-west-2.insided.com/amplitude-en/attachment/1e72785e-198d-4b6a-99c7-32e97f8f55dc.png)
Best practices for setting user IDs are available in our Help Center under identify your users, along with instructions to look up event data for individual users.