"erface 340 can provide a variety of different outputs to a user including but not limited to, number of penetrating members 312 available, number of penetrating members 312 used, actual depth of penetrating member 312 penetration on target tissue 320, stratum corneum thickness in the case where the target tissue 320 is the skin and an area below the skin, force delivered on target tissue 320, ener" . . . .