This product is mainly designed to test the position, strength and pen tip pressure of the first three fingers of the user when writing. This kit is a set of rehabilitation equipment that includes hardware and software. This kit contains three special pens, including a pencil, a ball pen, and a crayon in red, yellow, and blue colour that can be connected to the computer and sense the pressure of the first three fingers. There is also a smart card reader and a smart card. By recording the minimum and maximum strength of the user's first three fingers holding the pen, as well as the average strength of the three fingers when writing, it is possible to analyze how hard the user usually holds the pen when writing. In addition, the software will also record the pen tip pressure for comparison before and after training. The software can also be connected to a video camera to record the user's actual writing performance.