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An essential feature of an ideal switch site is volitional movement, which refers to the ability of an individual to intentionally activate the switch in a controlled manner. This kind of movement is crucial for effective interaction with assistive technology, as it ensures that the user can decide when to trigger the device, thereby promoting independence and enhancing the user's ability to communicate or control their environment.

Volitional movement encourages purposeful engagement with assistive devices, which is particularly important for users with varying degrees of mobility. When a person can intentionally activate a switch, it reflects their ability to control and influence their interaction with technology, ultimately leading to a more beneficial and satisfying user experience.

In contrast, features like large sustained contact or increased muscle tone might not consistently provide reliable or voluntary engagement with assistive technology. Likewise, involuntary reflex activation is not ideal since it lacks the element of user control, potentially leading to unintended activation of devices. Hence, the focus on volitional movement highlights the importance of user agency and intentional interaction within the context of assistive technology.

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