What the result actually measures
The bench records A and D as they reach the page. A keyboard with SOCD handling sends a real key-up for A a fraction of a millisecond after D goes down, while your finger is still on A; a hand needs tens of milliseconds to lift, so the two are an order of magnitude apart. The second module times the gap between A coming up and D going down across ten counter-strafes.
Measurement boundary: The page sees what the keyboard sends, not which setting sent it: Snap Tap, an SOCD mode, a driver macro or a software tool all look the same. Browser timestamps are coarsened for privacy, which does not matter at this scale but rules out sub-millisecond claims.
How to interpret the output
Last input wins
A release for A arrived a fraction of a millisecond after D went down while A was held: the keyboard resolved the pair for you. That is the behaviour Snap Tap and SOCD modes are sold on.
Both directions registered
The keyboard sent both keys and let the game decide. Counter-strafing is then on your fingers, which is how most competitive rules want it.
Counter-strafe gap
A small, steady positive gap is the skill. Negative gaps mean both directions were held for a moment; in most shooters those cancel into no movement for that instant.
Troubleshooting unexpected results
Nothing is recorded
Click inside the test area first so it has keyboard focus, and use the physical A and D keys — the page reads key positions, so AZERTY and other layouts work too.
The result changes between runs
Many keyboards apply SOCD only in a game mode or on one profile, and some only for keys you assigned. Test the exact profile you queue with.
Frequently asked questions
Is Snap Tap allowed in competitive games?
Riot and Valve have both moved against keyboards that release a key for you in competitive play, and tournament platforms set their own rules. Check the rules of the game and platform you queue on before you rely on it.
Can the page tell which keyboard feature did it?
No. It sees a key-up that no finger made; Snap Tap, a vendor SOCD mode, a driver macro and a software tool all produce the same signal.
Does it work on AZERTY?
Yes. The test reads the physical key positions where A and D sit on a US layout, so on AZERTY press Q and D.
Are my keystrokes stored?
No. Only A and D are listened to, only while a test is running, and nothing leaves the page.
