Imaging device includes an imaging unit that generates image data by imaging a subject, and a communication unit for receiving image data from a plurality of electronic devices, the image data received from the pre-registered electronic device as a target device for a given function comprising an image showing, and a control unit for combining the image represented by the image data generated by the imaging unit. Control unit registers the electronic device within a first predetermined number as the target device. Control unit via the communication unit the number of electronic devices for receiving image data is limited to a second predetermined number or less smaller than the first predetermined number (S14).