Elektrobiblioteka lets you control a computer interface with a book

The very medium through which we read books has changed fundamentally in recent times. While once they used to comprise exclusively of printed paper, they have been carried over to the digital realm and given the form of e-books. We can't touch them, flip the pages or feel them but we still read them and perhaps with an even greater appetite. So essentially, books are a part of our computing experience now.
Waldek Wegrzyn, a Polish designer, decided to do exactly the opposite – to make computing dependent upon a book. He connected up the interface of a computer with an electronic book.

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