A mechanical key can register before you press it all the way down. The actuation point and the end of travel describe different things. “The key was pressed” can mean an input, a sensation, or a sound—which makes the terms easy to mix up.
Four terms worth separating
| Term | Meaning | What it does not establish |
|---|---|---|
| Actuation point | Position at which the switch actuates | The moment of the loudest sound |
| Pre-travel | Distance from rest to actuation | The full distance available |
| Total travel | Distance from rest to the end of movement | How far you must always press to register |
| Bottom-out | Reaching the mechanical end of the press | Input registration itself |
For example, CHERRY’s MX2A Red specifications distinguish 2.0mm pre-travel from 4.0mm total travel. In that model, there is movement available after actuation. Those figures are not universal switch specifications.
Is the audible tap the input signal?
A bottom-out impact, a return sound when you release a key, and a clicky switch’s deliberate click are different events to consider. Hearing a clear tap does not precisely locate electrical actuation.
An ASMR recording is not a measurement of how far a key moved or when a character appeared onscreen. The most obvious sound should not automatically be treated as the instant the input registered.
Our linear, tactile, and clicky comparison explains bumps and clicks. A description of tactile feedback also does not replace the specification for the exact actuation position.
Is shorter travel always better?
Shorter pre-travel means less movement before actuation. That alone does not establish better accuracy or comfort for everyone.
Short and light are different, too. Travel is a distance; pressing force is a separate characteristic. Keycap height is another variable. Installing a taller cap does not add that height to the switch’s specified total travel.
Read distance, force, and switch type as separate properties. See keycaps versus switches for the roles of the two parts.
Observe the keyboard you already have
You can explore the distinction without trying to copy someone else’s typing style.
- Open a blank note where test characters are easy to delete.
- Press a letter key slowly and notice when a character appears.
- Separately notice the end of the press and the sound on release.
This is a simple observation, not a millimeter or latency measurement. Screen updates involve processing time, and your finger is not a precision travel gauge. There is no need to hit hard or tense your hand trying to avoid bottoming out.
The useful question is whether registration and the end of movement seem distinct on your keyboard—not whether you can reproduce an exact specification by hand.
A KeyKey tap is not physical switch travel
KeyKey lets you equip owned keycaps and switches and enjoy tapping with sound and haptics on supported devices. A flat touchscreen does not let you test the physical pre-travel or bottom-out depth of a mechanical switch.
These are digital responses, not a tool for measuring actuation or pressing force before buying hardware. Our phone haptics column explains how a screen can still communicate a sense of pressing.
Explore the sounds on the KeyKey homepage at a low volume. Rather than guessing when an electrical input happened, try noticing the beginning and ending of each sound.
