Information processor

A white stick device configured to:

• receive images captured by a camera of the white stick device;
• search for pedestrian crossings and signaling devices in the images;
• store route information including positions of pedestrian crossings and signaling devices;
• determine whether a pedestrian crossing or a signaling device is within a predetermined distance from the white stick device;
• upon determination that a pedestrian crossing or a signaling device is within the predetermined distance, notify a user of approach of the pedestrian crossing or the signaling device;
• calculate a direction of the pedestrian crossing and the signaling device with respect to the white stick device;
• calculate a matching degree of a direction of the white stick device with respect to the direction of the pedestrian crossing and the signaling device;
• and
• when the matching degree is greater than or equal to a predetermined threshold value, notify the user that the white stick device faces the direction of the pedestrian crossing and the signaling device.