Timotheus Hoettges, CEO of Telekom, explains a sensor to German Chancellor Angela Merkel during her tour of the CeBIT trade fair in Hanover, Germany, 20 March 2017. The IoT sensor can sense, amongst other things, information about movement, and measure and immediately transfer temperature and noise information. The expo, which begins 20 March 2017, will demonstrate concrete examples of uses for new technologies to its specialist audience. More than 3000 exhibitors from over 70 countries are expected at the expo, as well as 200,000 visitors. Photo: Ole Spata/dpa