CHECKUNO / Tools
Touch response test
Draw slowly across the surface and look for breaks in your strokes.
Use a finger, stylus or mouse to draw slow horizontal and vertical lines inside the canvas. Gaps can come from lifted fingers or browser behavior; repeat to confirm.
Ready. Draw inside the canvas.
Observes input received inside the canvas. It does not measure latency, pressure or full-screen coverage. Drawings are not saved; reload, resize or clear removes strokes.
LOCAL IN THIS PAGE · NO UPLOAD · NO CAMERA OR MICROPHONE ACCESS
How should I read the result?
A check is an observation, not a certification. Results do not establish authenticity, water resistance, remaining lifespan or the absence of hidden damage.
Read the full checking steps →