Electronic device, determination system, determination method, and program

A highly reliable authenticity determination of a product main body can be performed without using an outer package, a packaging box, or the like of a product. A function electronic calculator (10F) is provided with a battery power supply (DB), a solar power supply (SB), and a short-range wireless communication unit (NFC) (16) for communicating with a communication device (smartphone) (20). The NFC (16) operates by the solar power supply (SB) only in a state in which a power supply for operating the electronic calculator (10F) is switched from the battery power supply (DB) to the solar power supply (SB). The electronic calculator (10F) displays the solar marker (SM) on the display unit (12) in an operating state based on the solar power supply (SB). In a state in which a solar marker (SM) is displayed on an electronic calculator (10F), if a unique ID (manufacturing serial number) received from the electronic calculator (10) in response to transmission of an authenticity data request signal to the electronic c