Draw one continuous stroke. It lingers as a luminous afterimage while honest strips make the invisible motion inside it legible.
Ready — draw a stroke
Trace one continuous gesture
Press and drag across the panel — a loop, a signature, a scribble. Release to see it replay.
0.00s0.00s
Speedpx / second
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Curvatureturn per step
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Gesture energyderived from speed — not measured pressure
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Stillnesspauses & hesitations
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How to read it. The observatory records only the stroke you draw, on your device, with nothing sent anywhere.
Speed is distance over time between samples. Curvature is how sharply the direction turns at each step.
Gesture energy is derived from speed as an honest proxy for how firmly you seemed to press — pointers report no real pressure here, so nothing is measured.
Stillness rises where your hand hesitated or paused. Scrub the timeline to move the marker through every metric at once.