A system for managing a plurality of child profiles is provided that allows parents of children to capture a child’s life events in media files, which are automatically imported into a life album for each child. The biomarkers can also be used to screen large groups in order to identify individuals at risk of developing Diabetes. The camera can include an information display exposed on an outer surface of the housing. Especially, the present invention relates to glasses and lenses which are obtainable from the polyamide moulding materials.