Start and focus the pad. Try keys and simple combinations. Repeat events are ignored. Tab moves focus and ends the run; Escape cancels. Reserved shortcuts may never reach this page.
Tab remains available to leave this area. Use a pointer to finish a valid keyboard run without moving focus first.
What reached the browser
No input observed yet.
Last observed combination: None yet
Cannot judge yet
No completed run yet. Untested inputs are not failures.
Observations describe this browser session. They do not certify hardware health. Read the method and next steps →
Use a result as a starting point
If an unexpected event repeats, try a fresh browser session and another port or device where practical. Compare the same steps. A result can depend on the browser, operating system, input settings and physical device.
Does this measure hardware latency or polling rate?
No. Browser event delivery is affected by scheduling and input processing. These tools do not certify hardware latency, USB polling rate, DPI accuracy or switch lifespan.
Where do my results go?
The last 30 runs stay in this browser’s local storage. Use the history button to copy a readable report, export JSON or remove them. Raw keyboard and pointer event streams are not sent to a server by this app.