Vein-scanning could help future Apple Watch detect no-touch gestures

The Apple Watch may be able to detect hand gestures without relying on touch in the future, by monitoring the veins within the wrist of the user to determine how the hand itself is moving. The Apple Watch offers a number of simple gestures that users can make to perform functions with the wearable device, though so far the range has been quite limited. In terms of no-touch gestures, most users are familiar with raising the Apple Watch to wake it, or to trigger Siri by raising it to their mouth, but there is certainly more space to add gestures to the range.

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