An electronic device includes a tracking unit that tracks a movement of a first mobile device and a movement of a second mobile device, based on a position of the first mobile device and a position of the second mobile device received from a position estimation unit; a determination unit that determines a probability distribution of a distance between the first mobile device and the second mobile device, based on a probabilistic model, and the position of the first mobile device and the position of the second mobile device; and an action unit that performs action, based on the determined probability distribution of the distance.