A gesture input device including a plurality of magnetic generators, a plurality of magnetic sensors, and a controller is provided. The magnetic generators and the magnetic sensors are disposed on a wearable object. The magnetic sensors are configured to sense a plurality of magnetic signals provided by the magnetic generators, and correspondingly generate a plurality of voltage signals according to the magnetic field strengths of the sensed magnetic signals. The controller is coupled to the magnetic sensors. The controller is configured to receive the voltage signals. When the wearable object is worn on a user's hand and the user's hand is in different gestures, the voltage signals generated by the magnetic sensors correspondingly change. The controller determines that the gesture of the user's hand is changed according to the change of the voltage signals.本揭露提出一種手勢輸入裝置。手勢輸入裝置包括多個磁產生器、多個磁感測器以及控制器。所述多個磁產生器以及所述多個磁感測器配置在可穿戴物件上。所述多個磁感測器用以感測由所述多個磁產生器提供的多個磁訊號，並且依據感測到的所述多個磁訊號的磁場強度來對應產生多個電壓訊號。控制器耦接所述多個磁感測器。控制器用以接收所述多個電壓訊號。當可穿戴物件穿戴於使用者的手部，並且使用者的手部變動位置時，所述多個磁感測器所產生的所述多個電壓訊號對應的改變。控制器依據所述多個電壓訊號的改變而判斷使用者的手部的位置產生變動。
