A technique improves the effectiveness of evaluation information of users on stores and products relative to a large number of unidentifiable users. The substrate has a first end having thereon the immobilized billfish specific antigen-containing sample and a second end adapted to receive a solution including an antibody that specifically binds the billfish specific antigen. This attribute is a path history, which is dynamically computed at each router as the routing path to a particular destination is changed. A fourth phase plate that has a refractive index anisotropy of nx=ny>nz is disposed between the liquid crystal cell and the first polarizer plate or the second phase plate.