Fushift · Hand tracking

AirDraw

Draw in the air with your hand. Pinch your thumb and index finger together to put the pen down, open the pinch to lift it. Everything runs in this tab — no video ever leaves your device.

Starting Loading hand model
Ink
Canvas
View

Gestures

Pinch thumb + index
Pen down. Open the pinch to lift.
Victory sign
Eraser. Index and middle up, ring and little finger curled.
Both hands
Tracked at once, each with its own independent pen.

Keys

1–8
Pick ink colour
R
Spectrum ink
Z
Undo last stroke
C
Clear canvas
S
Save as PNG
B / H / G
Camera, skeleton, glow

How it reads your hand

Every threshold is measured as a ratio against your palm length, never in pixels, so the gestures behave the same whether your hand is close to the lens or across the room. Pen position is smoothed with a One Euro filter, which eases off as your hand speeds up — steady lines when you draw slowly, no lag when you move fast.

Stroke width follows pen speed. Move slowly for a heavy line, flick for a thin one.