2. Try the Vigo on the user's head. Adjust the headband in a way
that it sits firmly on the top of the user's head, and they can wear
it comfortably for hours. To ensure operational efficiency, adjust
the Vigo on the head. The sensor should be placed
approximately 1-3 cm from the movable parts of the user's face
(corner of the eye, cheek, corner of the mouth, etc.)
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