A pilot study and collaboration between patients, relatives and professionals in the research program has clarified the need to develop a gPCC eHealth platform. Previous research has shown that eHealth support, where the users are not involved in the process, has a low impact and has highlighted several limitations with respect to: patients' participation in the design process; its anchorage in the home and local environment and opportunities for communication rather than information. Therefore this study has a participatory design which assumes that all users (patients, relatives and health care professionals) are involved in the study design which facilitates implementation. An end-user perspective as a starting point increases the chances that users adapt a positive attitude towards the new system. Person-centred care combined with an eHealth support along the chain of health care showed a 4-fold chance of improved self-efficacy in combination with return to work or prior activity level after an event of acute coronary syndrome.