Touch Screen Test
Check where this browser receives finger input, how many touches it sees together, and whether unexpected touch input appears hands-off.
Touch Screen Test controls
Touch and drag across the whole test area, including edges and corners.
Hands-off unexpected-touch check
Optional: run a separate 15-second hands-off observation.
Details
Device-reported maximum touch points: —
Coverage describes this browser test area only. Mouse and stylus input do not count as finger touch.
How to test your touch screen
- Drag one or more fingers across the whole test area, including the edges and corners.
- Watch Coverage and Maximum detected together while you test.
- If cells remain uncovered, use Check missed areas and sweep those areas again.
- Optionally run the separate hands-off check to observe unexpected touch-contact starts for 15 seconds.
What coverage means
Coverage is the portion of this browser test area where actual finger-touch samples were observed. The tool does not interpolate between samples and does not turn out-of-area captured movement into edge coverage.
Missed areas, dead spots, and dead zones
The first and confirmation passes are stored separately. A cell can be described as not detected in both passes only when neither pass received an in-area touch sample there. Repeatable missed areas may indicate a touch problem, but this browser test cannot identify the failed hardware component.
Ghost touch and unexpected input
The 15-second hands-off check can help you observe unexpected touch-contact starts sometimes described as ghost touch. It does not confirm a ghost-touch fault, and a quiet run cannot rule out intermittent problems or prove that a touchscreen is healthy. Browser Pointer Events are not a hardware certification; mouse and stylus input are intentionally excluded, and fullscreen is optional.