FLUORESCENT OR LUMINOUS COMPOSITION

摘要

A fluorescent or phosphorescent composition which comprises a powder comprising substrate particles and multiple layers covering each of the particles and a fluorescent or phosphorescent material, said composition wherein at least one of said multiple layers contains said fluorescent or phosphorescent material, an object to be verified of its authenticity characterized by containing said composition or having said composition attached to it, and a method for verifying the authenticity of an object, characterized as comprising irradiating a light to the object and detecting a fluorescence or phosphorescence emitted by the object.