Handwriting input system, board, and identification component

A handwriting input system includes a board for writing and a pen that serves as a writing instrument. The pen includes a pen tip that leaves visible handwriting on the board when the pen tip comes into contact with the board and an identification circuit that provides an identification signal. The board includes a coordinate detection section that detects position coordinates of a position on the board where the pen tip is in contact with the board and a pen identification section that detects the identification signal in a contactless manner.