Abstract: An interchip for implantation into a gaming chip or token provides a circular array of light-receiving faces arrayed about the circumference of the chip or token. Light received by one face is conducted to the remainder of the faces by a number of internal fingers which communicate light to and from a central portion. The number of fingers and, hence, faces is selected to reflect the value and, hence, authenticity of the chip or token. Racks of such chips may be scanned or illuminated to detect their value or authenticity.