A process for recording, storing and displaying optically readable information on a support using a polymer mixture P as the information carrier, wherein P comprises at least two different, mutually compatible polymers P.sub.1 and P.sub.2, and has a lower critical solution temperature (LCST), the optically differentiable modification of the information carrier being brought about by phase transition from a compatible polymer mixture below the LCST to demixed polymers P.sub.1 and P.sub.2 above the LCST or the reverse of this transition.