These kinds of systems have applications in medical interfaces for example, allowing a surgeon to view and interact with a screen without needing to touch it, or in augmented reality headsets, where the user may be wearing a headset with a digital overlay on the real world that they need to interact with. In some cases, hand tracking or gesture recognition systems use markers, gloves or sensors, but for the most part the ideal system doesn’t require the user to touch anything. Both are methods which allow users to use their hands to interact with computers, without the need for touch, controllers or devices. When we start to talk about hand tracking and gesture recognition, they can be easily confused for each other, so it’s worthwhile to start with a brief explanation of both, what they are and how they differ.
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