| 主权项 |
1. A mobile electronic device, comprising:
a display unit; a light-emitting unit configured to emit light; and a control unit configured to perform control such that a predetermined operation is executed when a variation between first information and second information is greater than a threshold, the first information and the second information being obtained with respect to an area to which the light-emitting unit emits the light, wherein said light is a characteristic image in which a boundary between different colors is clear, the control unit is configured to perform a preliminary procedure before a crime prevention procedure, and in the preliminary procedure, the control unit is configured to
cause the display unit to display a query whether an appearance of a subject within the area changes with time, andin response to a user's response to the query, cause the light-emitting unit to emit the characteristic image to the area. |
