检查什么
在整个表面移动手指，寻找死区、轨迹中断或异常跳动。浏览器和系统可能保留边缘手势。
Touch Screen Test
Check multi-touch tracking and sweep the entire display for dead zones. The actual test runs full screen so every reachable part of the panel can be checked.
Active touches: 0 · browser max: 0
Mouse and trackpad input are intentionally ignored. Use the touchscreen itself.