A surgical robotic system comprising: a surgical robot； a user interface console coupled to the surgical robot whereby a user can control motion of the surgical robot； a data logger for logging data from a surgical procedure performed by means of the robot； and a portable user terminal； the system further comprising: a display controllable by one of the data logger and the user terminal, that one of the data logger and the user terminal being configured for displaying a machine-readable code whereby the data logger or a user of the user terminal can be identified； and a camera coupled to the other of the data logger and the user terminal； the said other of the data logger and the user terminal being configured to, on receiving from the camera an image of a machine-readable code, decode that code to identify the data logger or a user of the user terminal and to cause the identified entity to be logged in association with a procedure performed by means of the robot.
