Like what is offered https://www.extrawatch.com/ eg: https://www.extrawatch.com/video/extrawatch-4.0-demo-01.webm

Most web chat widgets have this feature. Realtime visitor list, Geo location map of visitors, referrers etc.

You can start with a simple realtime visitor list then a geo map and go on.

Would love to see the page they are currently viewing when chatting with them