

A sapphire blue ceramic jug with a looping handle and pinched spout, photographed up close in warm sunlight beside a second blue vase. The finder squares are disguised as inset square tiles painted into the glaze, each with concentric blue and white rings. The data modules are the dark navy blotches spread across the speckled white body, set against the pale glaze. Strong cobalt-on-white contrast and the even spread of the splotches keep the pattern clear, while the blurred background keeps attention on the jug.