‘titrebSummary’/titreb Health services are one of the sectors in which important information infrastructure has been developed for a long time and are formulated with ever more ambitious plans in this area. The rules for writing and authoritative principles for Patient Summaries are very closely specified in a set of decrees and regulations. This article explores how computerisation of care records will renew the framework already created and reactivate the associated challenges. He wondered how the rules so equipped made the areas where information was invisible to work, as implemented by nurses. The work of these ‘small hands’ appears to be a set of practices aimed at filling gaps in computerised rationality, by reintroducing patients’ stories and the open intrigue of their care trajectory. It is a work distributed, within the nurse group and with other technical objects, to produce the conditions for a manageable activity.