A lancet driver is provided wherein the driver exerts a driving force on a
lancet during a lancing cycle and is used on a tissue site. The driver
comprises of a drive force generator for advancing the lancet and a
processor coupled to the drive force generator capable of changing the
direction and magnitude of force exerted on the lancet during the lancing
cycle. The driver further includes a human interface on the housing
providing at least one output for communicating with the patient.