A decorative laminate is provided which includes one or more cellulosic core sheets, one or more decor sheets and optional overlay sheets. The inner cladding region has a solid part that is made of a glass material into a part or all of which a rare earth element is doped, and the outer cladding region has a refractive index lower than that of the solid part of the inner cladding region. The proximity attributes may be used to access functionally equivalent instances of a resource object based on proximity.