Touch Tap Response Test
Use repeated taps across the display to look for a repeatable unresponsive region.
Touch the grid
Drag around the full screen area. Pointer events are shown locally.
Active touches0
Max simultaneous0
Pointer updates0
Taps / last hold0 / —
Orientation—
What happened?Choose the result you observed.
Privacy: Touch events stay local.
What this test tells you
This test checks
- Tap events
- Touch coordinates
- Repeatability
How to read the result
A browser cannot prove a digitizer defect automatically; repeatable missed input across apps is stronger evidence.
Screen protectors, moisture and accessibility settings can affect touch behavior.