Diabetes represents one of most serious public health disease. The aim of the Metabolink project was to develop a smart solution for elderly people with diabetes and obesity, in order to promote a healthier style of life, improve diabetic control trying to reduce overall cost for the community. It consists of an app for smartphone linked to a system and a process of data collection based on bidimensional barcode (QRcode) and NFC-tag technologies. The system was accepted by all the patients and they learned efficaciously in a few hours how to use it. Unfortunately, we observed a drop-out of about 50% in the first month. Patients remaining in the study refers a slight improvement in the Quality of Life Enjoyment and Satisfaction Questionnaire (Q-LES-Q) and General Satisfaction Questionnaire (GSQ) and they decided to continue to use it after the end of the follow-up.