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A photo of an HP laptop on a wooden desk displaying a Heart Rhythm Scanner application. The screen shows a blank Lorenz-style plot on the left, a bar chart of HRV components in red, olive, green and dark green on the centre panel, a power spectrum line graph below it, and a purple LF/HF ratio bar on the right. A white coiled cable and sensor leads hang from the side, with a telephone and a potted plant nearby. No people are visible.