A sensor system for protecting products and technology from reverse engineering by detecting attempts to probe electronic circuitry includes a sensor electrically linked to electronic circuitry. One side of the assembly facing the specimen is coated with or bonded to scintillator material as the charged particle detection surface. The invention still further provides isolated polypeptides, fusion polypeptides, antigenic peptides and antibodies. In contrast, the switchable hologram transmits the first bandwidth light without substantial alteration when operating in the inactive state. Manufacturing flexibility and high throughput is achieved.