Telecommunication technology has reached a maturity which can effectively s
upport the promotion of health, prevention and management of diseases and r
ehabilitation. To achieve effective support harmonisation and interoperabil
ity of technologies are main requirements. This article tries to point out
hew interoperability is being met and how the requirements are being applie
d using DIABCARD as an example. DIABCARD has developed a chip card based me
dical information system for the care of persons with diabetes.