Patent ID: 8471710

Claim:
A wireless tag comprising: a base member that is flexible and on a surface of which a wiring pattern is formed; a wireless circuit chip that is mounted on the base member and connected to the wiring pattern; protective members that cover the base member and the wireless circuit chip and are lower in hardness than the base member; and a plurality of spherical projections that are arranged on the surfaces of the protective members, higher in hardness than the base member, and so arranged as to interfere with other adjacent spherical projections when at least the protective members are bent beyond a predetermined angle, wherein when a distance between two adjacent spherical projections of the plurality of spherical projections is represented by σ, a peripheral length of a spherical projection of the two adjacent spherical projections in a direction of a line connecting the two adjacent spherical projections is represented by L, and a width of the spherical projection in the direction of the line is represented by d, the plurality of spherical projections are arranged at intervals satisfying an inequality σ<(d/2)+(L/2).