SOCD & Snap Tap Test

Tracks W/A/S/D. The browser only sees the raw keydown/keyup stream after your OS and keyboard firmware have already resolved any opposite-direction (SOCD) input — so we can't directly report which resolution mode (neutral, last-input-wins, etc.) your keyboard uses. Instead, hold both keys of an opposing pair (A+D or W+S) and watch the event order and timing in the log below to infer it yourself.