[Continuous glucose monitoring: different systems, different ambitions]

This paper describes the current approaches towards the development of continuous glucose monitoring system, in which glucose is measured either in blood or in the subcutaneous tissue. These systems may be used as a glycemic holter, or to display continuously the changes in glucose level, to trigger an alarm in case of hypoglycemia, or of risk of hypoglycemia, or finally to pave the way to the development of an artificial beta cell.