Your data
A service sheet for your data: what the instruments read, where it is processed and what stays on this computer.
What each instrument reads and where it stays
| Data | Processed | Kept |
|---|---|---|
| Pointer motion, clicks, wheel steps | in this tab, by the instrument script | in memory until you press Reset or close the page |
| Key presses | in this tab, only while key capture is on | in memory until you press Reset or close the page |
| Touch and pen strokes | in this tab | in memory until you press Reset or close the page |
| Chatter threshold, keyboard layout choice | in this tab | local storage of this browser, keys starting with bx. |
| Offline copy of the pages | by the service worker | cache storage of this browser |
| Raw trace file | built in this tab when you ask for it | your downloads folder only |
| Visit counters, tracking pixels, cookies | not used | none |
Delivery of the pages
Cloudflare delivers the pages, so its edge sees each page request (address, time, IP) the way any web host does. Readings are never part of such a request.
Checking it on your own machine
- Open your browser's developer tools on the Network tab before you start: every request the page makes is listed there, and none of them carries your readings.
- The Content-Security-Policy header permits connections to this domain only; a request to anywhere else would be refused by the browser, not merely left out.
- Load an instrument once, then unplug the network cable or disconnect from Wi-Fi: the instruments still run.