The object of the invention is a measurement device and a system for measuring and monitoring information which relates to diabetes care. The purpose of the invention is to motivate a user to perform activities that are required in the care. In a preferred embodiment of the invention a performance levels are determined and the level of a user is based on the activities and/or measurement results of the user. Upon increase in the user's level the user is awarded with e.g. new reminder figure in the device. The motivation of a user to follow care activities is thus increased.
