Holograms offer a means of increasing data storage density that may help to meet the demands of ever decreasing device sizes and increasing memory requirements. Kohta Nagaya, Eiji Hata and Yasuo Tomita at the University of Electro-Communications in Japan demonstrate that coaxial holographic digital data storage in a thiol-ene based nanoparticle-polymer composite can achieve competitive symbol error rates and signal-to-noise ratios.