A patent has been awarded to Innoventions which allows the back of the hand to become a virtual touchpad. The patent covers the use of the skin’s surface around a smartwatch for data and command entry. One or more cameras built into the side of the smartwatch facing the assigned virtual touchpad area detect touch gestures by the fingers on the virtual touchpad.
Sound and motion sensors that detect vibrations may also be incorporated to improve accuracy.
A key
feature is the ability to distinguish between a true touching gesture (when the finger taps or drags
the skin) and a hovering gesture (when the finger is above the skin, not touching it). This makes
it useful in capturing the entered character by analysing the sequence of touching and hovering gestures.
“Since
the user taps and drags on their hand via the virtual touchpad and not on the tiny
smartwatch display, it is easier to interact as the user can clearly see the previously entered characters,
without any obstruction,” said Dr. David Y. Feinstein, president and CTO of Innoventions.
“It also eliminates messing up
the small screen when your hands are really sweaty and dirty.”
Many common gestures used in mobile
devices, including drag, tap, double-tap, long press, pinch and others can be detected and implemented with this technology.