The contract has been terminated, the apartment handover has taken place and the new tenant is ready to move in. It all sounds simple – on a superficial level, at least – but in fact a change of tenant is a pretty complex affair, involving various utilities and meter reading companies as well as the old and new tenants and their landlord. Meter readings have to be documented and invoices issued, data processed and forwarded. The new tenant may also have to take over existing contracts from his or her predecessor. It is in the management of such copious amounts of data that the problem lies: housing companies, utilities and meter reading companies require specific customer and consumption data in their own formats at times compatible with their specific schedules. This data is still captured multiple times, processed by hand and forwarded on paper – a time-consuming process that takes time and is rife with error.