A robot apparatus, method and computer program storage device use a memory that stores cueing point information and user information to assist a user in an external environment. The cueing points are distributed within an environmental map held by the robot apparatus, and when the user is detected by the robot apparatus as approaching a predetermined region within the external environment classified as a cueing point, the robot apparatus reacts by providing a cue to the user. The cue may user-specific, or optionally provided based on a level of care required by the user.