Fig. 1.

Schematic illustration of a device that stores and reads out information based only on chemistry and chemical reactions, as an example of the principles of infochemistry. Here, printed patterns of alkali metal salts on a thin strip of NC form an infofuse that, when ignited at one end, emits a pulsed sequence of colored light that can transmit a message. This first demonstrator provides a combination of performance parameters that cannot be achieved easily by using established information technologies, making it suitable for use, for example, in demanding environments where access to electrical power is also limited.