Yogi Type Keyboard

The YogiType? seems to be a vertical keyboard with integrated thumb controlled mouse (and scroll wheel on the other thumb)

Apparently developed in the Netherlands, you type behind the keyboard and there's a led for every key on the side facing you that lights up when the key is pressed.

Marketing claims that it improves posture, reduced RSI, etc.

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Costs: Apperantly around 790 EUR.