Abstract: The invention relates to a system and a process for storing and reading information, having a data storage medium for storing information and a reading unit for reading the information stored in the data storage medium, the data storage medium having a dielectric and the information being formed by the presence or non-presence of at least one storage electrode in the data storage medium, and the reading unit having at least one input electrode and at least one reading electrode, it being possible for the data storage medium and the reading unit to be coupled to each other, for the purpose of reading the information, in such a manner that the input electrode and the storage electrode form a first capacitor and the reading electrode and the storage electrode form a second capacitor. The reading unit also has means for generating a digital voltage jump at the input electrode and means for comparing the voltage jump occurring at the reading electrode with a reference voltage.