Blockchain technology is often discussed and theorized in relation to cryptocurrencies such as Bitcoin. Its quality as a technology that produces advanced encryption keys between objects, however, also makes it interesting to those who seek to connect physical objects to digital elements. The reason for this is that the link between objects needs to be ‘secure’ from undesired external interference. In relation to such interests, blockchain has been identified as a highly attractive technology to support the general digitalization of society towards the Internet of Things, smart cities etc. In extension, the implementation of blockchain technology implies that it may work as a tool that has the capacity to direct which objects may/may not interact with each other. The ‘ledger of everything’ that blockchain may possibly produce as regards the ‘Internet of Everything’ is even suggested to make humans and other intermediary technologies redundant. In this essay, I argue that in order to sustain legal critique when the world moves into the next era of digitalization, we need to understand - and question - how technological control operates through e.g. blockchain technology by locking physical and digital elements to each other. © The Author(s) 2018