Following the publication last year of the data collected by Windows 10's built-in telemetry and diagnostic tracking, Microsoft today announced that the next major Windows 10 update, due around March or April, will support a new app, the Windows Diagnostic Data Viewer, that will allow Windows users to browse and inspect the data that the system has collected.
Windows 10 has two settings for its data collection, "basic" and "full." The documentation last year described all the data collected in the "basic" setting but only gave a broad outline of the kinds of things that the "full" setting collected. The new app will show users precisely what the full setting entails and a comparison with what would be sent with the basic setting.
The utility of the app will tend to vary depending on what data is being inspected. The presentation is low-level (Microsoft's screenshots show JSON structured data using various magic numbers—numeric values that encode information but without any key to explain what information each number encodes), so straightforward reading and interpretation will remain limited.