An image capturing device according to one embodiment includes a camera unit configured to capture images of a surrounding environment and generate image data, a suction-attachment unit configured to support the camera unit and be fixed on a suction-attachment subject surface by a user, a determination unit configured to determine whether or not the image data can be output to a recording unit, and a controller configured to control output of the image data to the recording unit, based on a determination result by the determination unit.