UK online supermarket Ocado has installed more than 35 kilometres of conveyor belts in its London factory , upon which crates move an average of four and half kilometres as items are selected to fulfil customers ' orders . You can opt out at any time or find out more by reading our cookie policy. While human operators transfer the pre - selected items into customers ' order crates , hundreds of sensors track the crates ' precise location , sending data back to a central control room .
UK online supermarket Ocado has installed more than 35 kilometres of conveyor belts in its London factory , upon which crates move an average of four and half kilometres as items are selected to fulfil customers ' orders . While human operators transfer the pre - selected items into customers ' order crates , hundreds of sensors track the crates ' precise location , sending data back to a central control room .