Until spring 2020 the trade fair sector was still boasting: "You can't e-mail a handshake " Then Covid-19 came along and everything was turned upside down: exhibitions were postponed, cancelled or relocated into digital space. It also brought forth new concepts with which we had not reckoned a couple of years ago: virtual twins, AR or VR walk-through stands, online exhibitions with new meeting formats, or quite different ideas that are currently...