What to do
Touch each highlighted marker near the edges of the field. Fullscreen gives you a larger test area.
Test touchscreen corners and bezels for edge detection, missed taps, and weak contact zones.
Save a result to keep it in this browser. History holds your five most recent saved results for this test.
No saved results yet.
Touch each highlighted marker near the edges of the field. Fullscreen gives you a larger test area.
System navigation gestures and palm rejection can intercept touches near the edge. Retest an unresponsive area.
Contact positions, identifiers, and pressure come from Pointer Events where available. Pressure may be a default value on unsupported hardware. Browser gestures and palm rejection can interrupt contact tracking.