An electronic device, method and system for detecting fingers and non-transitory computer-readable medium are provided in this disclosure. The electronic device includes a touch panel, a plurality of distance detection units, and a processor. The processor electrically connected to the touch panel and the distance detection units. The touch panel is configured for sensing a touched position. The distance detection units are configured for detecting a plurality of distance measurement signals. The processor is configured for calculating a plurality of measurement values according to the touched position and the distance measurement signals; determining a finger gesture information according to the measurement values, the finger gesture information indicating which one of a plurality of areas on the touched position is touched; and transmitting a finger gesture, based on the finger gesture information, to an external device to display a simulated finger gesture of an avatar in a simulated scenario.