In this page we want to demonstrate how you can track entity usage in clients.
On Wikimedia projectsEdit
You can find pages subscribed to any given entities using Special:EntityUsage. For example w:fr:Special:EntityUsage/Q30 gives list of pages (with the aspect they are using) that use United States of America (Q30).
At the bottom of pages in clients you can find wikibase entities that are being used in that page. For example in action=edit on "Alan Turing" article in English Wikipedia you can find "Wikidata entities used in this page".
When you check out information of a page in clients you can find entities being used in that page. For example in action=info of "Barack Obama" in English Wikipedia you can find "Wikidata entities used in this page".