Lenovo turned a lot of heads when it announced its latest Yoga design, the Yoga Book. It's essentially a convertible laptop with a fold-back screen, complete with the Yoga line's well-regarded watch band hinge. But the Yoga Book has an ace up its sleeve: instead of a conventional keyboard, it uses a gigantic touch-sensitive panel that includes a dedicated keyboard mode, with virtual backlit "keys" that can be activated at a touch. Windows and Android versions are being made, and the latter is now up for pre-order.

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