To increase patients' empowerment and involvement in their own health, several countries has decided to provide patients with electronic access to their health record. This paper reports on the main findings from sub-studies and pilots prior to the implementation of patients' access to their medical records in large-scale in the Northern Norway Region. The largest pilot included nearly 500 patients. Data for the participatory design process was collected through questionnaires and interviews. The results revealed that the service in general functioned as expected. The patients reported that they would continue to use the service, recommend it to others, and generally had no problems in understanding the content.