Keyboards is a device that transmits character signals to a computer by pressing keys with fingers. Hitting a sentence with a keyboard is to record letters. However, "act of typing a key" is a momentary occurrence and "act of typing" itself does not remain. This is a system for recording 'act of typing a key'. This work leaves the trajectory of the key pushed in the three dimensional space. Draw based on the data of the position of the pressed key, the order of the pressed keys, the time until pressing the key, and the number of times the key is pressed. The longer the time you press the key, the more the curve becomes a curve. This means that you are taking a detour by pressing the next key.