Just as the radio did not give in to the video, the book to the Kindle, mechanical keyboards will not give in to virtual ones so quickly either, because they lack a key ingredient that is needed by all those who "cook" with words - writers. Feedback in terms of physical response. Until recently, this came with a considerable price, an inconvenience that does not coincide with the trend of mobile devices. But the new Logitech keyboard Keys-To-Go combines the best of both worlds.