*Introduction* ARHand is an input method, which is based on the hand gesture recognition. Easily and fast input characters with only 7 simple hand gestures. This app is particularly suitable for wearable computing devices, e.g. smartglasses and headsets for augmented reality (AR) and virtual reality (AR), which are not usually equipped with keyboards and touch panels. *Features* Feature 1: Accurate hand gesture recognition. ARHand can type letters by detecting your hand and recognizing your hand gestures. Feature 2: Simple input method. Select and enter the corresponding character by hand gestures. *How to use* Step 1: Hand gesture x to select the xth row. Step 2: Hand gesture y to select the yth column. Step 3: The character of xth row and yth column is selected and automatically input. *About us* ARHand is developed by Smart Display Lab of SJTU. *Feedback* Should you have any questions or inputs, please feel free to reach us via [email protected].