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✋ Reach to flip slides☝️ Point to highlight⌨️ Keys still work
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Gesture guide
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Reach to change slides
Raise your hand near the middle with your palm to the camera, fingers up, and hold it still for a moment — the dot in the preview turns blue.
Reach right past the line for the next slide, reach left for the previous one.
Come back to the shaded middle and reach again to keep going — no need to take your hand away.
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☝️
Point to highlight
Point with your index finger — any direction — and a laser pointer follows it. The dashed box in the preview maps to the whole slide, so you never have to reach the camera's edges. Lower your finger to hide it.
⌨️
Keyboard
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Everyday hand movements rarely flip slides: it only arms when you deliberately show your palm and hold it still, and it disarms again after a few seconds without a reach. The reach distance scales with the size of your hand in the picture, within limits, so it adapts as you move closer or further away.