Abstract: Disclosed is a mechanically readable code including a first area comprising multiple first unit cells and including an information region where information was recorded and a second area including multiple second unit cells including an allochroic cell that changes in color depending on a physical quantity. The multiple first unit cells include transitional color cells having any transitional color in the process of color change of the allochroic cell.

Abstract: Disclosed is a mechanically readable code including a first area comprising multiple first unit cells and including an information region where information was recorded and a second area including multiple second unit cells including an allochroic cell that changes in color depending on a physical quantity. The multiple first unit cells include transitional color cells having any transitional color in the process of color change of the allochroic cell.

Abstract: A medicine management apparatus has a production management apparatus that manages lot information including a lot number of a medicine and lot trace information; a change management apparatus that manages change control information including a change control number of the medicine and product information; and an input apparatus that inputs the lot number of the medicine and the change control number, the medicine management apparatus including: a first storage unit that stores the lot information r; a second storage unit that stores the lot trace information; a third storage unit that stores the change control information; and a data management unit that manages the lot information including the lot number and the lot trace information in association with the change control information including the change control number according to the lot number and the change control number to be applied to a product having the lot number that is input.