The paper deals with digital surveillance in the postmodern world. We define a new term ‘Surveillance of Things’ in the context of the study of the surveillance, and try to determine, whether and how the surveillance of people is connected with surveillance of things. We pay particular attention to the Internet of things and analyze in detail the principles of Sigfox network.We work on the presumption that information about people obtained through surveillance of things are interpreted incorrectly and can have a direct impact on groups of people and also individuals.