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DISPLAY TEST/ONLINE
HIGH-SPEED TOUCH SAMPLING & FLICK KINEMATICS

Swipe Velocity & Acceleration Benchmark

Flick your finger or stylus across the canvas to measure instantaneous swipe velocity (pixels per second), peak acceleration, and digitizer timestamp stability.

Swipe Velocity & Acceleration Benchmark

Swipe quickly across the canvas area. Tracks swipe velocity (pixels per millisecond) and peak acceleration values.

Instant Speed0.0 px/ms
Peak Speed0.0 px/ms
Peak Acceleration0.0 px/ms²
GESTURE KINEMATICS & SAMPLING STABILITY

Touch Flick Kinematics, Velocity Derivation & Timestamp Jitter

Touch gesture tracking performance depends on high-frequency sampling (120Hz to 360Hz digitizer polling) combined with low-variance timestamp intervals (Δt). Velocity (v) and acceleration (a) are derived from continuous spatial coordinate deltas:

KINEMATICS DERIVATION
v(t) = √( (Δx/Δt)² + (Δy/Δt)² )
a(t) = ( v(t) - v(t-1) ) / Δt

OPTOMETRIC ERGONOMICS & NON-MEDICAL NOTICE

Display Test Online is an engineering calibration utility for electronic visual displays (LCD, OLED, QD-OLED, MicroLED) and mobile touch digitizers. This software is NOT a medical eye exam, optometric vision test, or diagnostic health utility.

To reduce Digital Eye Strain (DES) during display calibration, apply optometric ergonomics:

  • The 20-20-20 Rule: Every 20 minutes, look at an object at least 20 feet away for 20 seconds.
  • Ambient Illumination: Ensure room ambient lighting matches display brightness levels (~100–150 nits for standard SDR workloads).
  • Optimal Viewing Distance: Place your screen approximately 20 to 30 inches (50–75 cm) from your eyes.
Technical FAQs & Helpful Content

Frequently Asked Questions

Everything you need to know about this diagnostic instrument, calibration procedures, and display technical standards.

01.What is the Swipe Velocity & Acceleration Benchmark?
This test measures the speed (in pixels per second) and acceleration of your finger or stylus swipe gestures across the screen using high-resolution hardware touch event timestamps.
02.How is swipe velocity calculated in web browsers?
Swipe velocity is calculated as the Euclidean distance traversed between consecutive touch events divided by the time interval (v = √(Δx² + Δy²) / Δt).
03.What is a good swipe velocity score for mobile gaming?
Fast gaming flicks reach velocities between 2,000 px/s and 8,000 px/s. High touch sampling digitizers (240Hz+) maintain smooth tracking at extreme speeds without dropping events.
04.What is touch digitizer sampling rate vs screen refresh rate?
Digitizer sampling rate is how often the touch screen scans for touch inputs (e.g. 240Hz or 480Hz), while screen refresh rate is how often visual frames are displayed (e.g. 60Hz or 120Hz).
05.Why does my swipe velocity graph show sudden spikes or drops?
Spikes or drops in velocity telemetry are caused by OS event batching, browser main thread frame drops, or digitizer timestamp jitter.
06.How does high touch sampling rate improve competitive mobile gaming?
A 240Hz or 480Hz touch sampling rate cuts initial swipe detection latency down to ~2ms–4ms, providing near-instantaneous aiming response in competitive FPS games.
07.Does screen size affect measured swipe velocity?
Physical screen size affects gesture motion distance, but velocity measurements in px/s or mm/s remain normalized across devices.
08.Can I benchmark active stylus swipe speeds with this tool?
Yes, active pens like Apple Pencil or S-Pen stream high-precision position and velocity data to W3C PointerEvents.
09.What causes gesture momentum and flick scrolling overshoot?
Mobile operating systems use calculated release velocity to trigger kinetic momentum scrolling. Accurate end-velocity calculation prevents jerky list scrolling.
10.How do I clear swipe velocity history?
Press the 'C' hotkey or click 'Clear Telemetry Log' to reset maximum recorded speed and acceleration benchmarks.
Not sure which test to run next? Need troubleshooting advice?
Read Complete Diagnostic Guide →
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Master Guide & Decision Tree →
Dead Zone MatrixMulti-Touch CounterVector PrecisionSwipe VelocityInput Lag Test
PASS

HIGH-SPEED FLICK

Flick Speed Rating

94/100
Max Velocity4,280 px/s
Sampling Rate240 Hz

Kinematics Readout

Velocity & Acceleration

Live Flicks
Instantaneous Velocity
3,450px/s
Peak Acceleration
18.2px/ms²

Kinematics Stream

Microsecond Delta Jitter

240Hz Touch
Current: 240 HzJitter σ: 0.08 ms

Shortcuts

Keyboard Navigation

Hotkeys
F
Toggle Fullscreen
C
Clear Telemetry Log
TV users can navigate with D-Pad & Remote arrow keys

Kinematics & Physics

W3C PointerEvents Spec

W3C Spec
Standard Citations
W3C Pointer Eventshigh-resolution timestamps

Sub-millisecond event timestamp resolution for precise derivative kinematic calculations.

Monitor OSD Calibration
  • Swipe quickly across the full canvas width for maximum velocity registration.
  • Keep browser background tabs closed to prevent event batching.
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