According to one embodiment, an electronic device includes a display module, an operation module, a communication module, an obtaining module, and a calculator. The operation module obtains operation on the display screen of the display module. The communication module communicates with another electronic device. The obtaining module obtains trace information indicating a trace of operation moving from the electronic device to the other electronic device or a trace of operation moving from the other electronic device to the electronic device based on operation on the display screen of the electronic device and operation on the display screen of the other electronic device. The calculator calculates a positional relationship between the electronic device and the other electronic device based on the trace information.