A dispensing system for medication comprising a dispenser (55, 56) into which the canister (60) of medication is placed. The dispenser has a locking mechanism for selectively preventing dispensing of the medication. The system receives input data from a user and has a control device remote from the dispenser to lock the dispenser until the input data is correctly entered. The dispenser may be configured by a cartridge (100) inserted into the dispenser in place of the canister (60). The dispenser also has means for determining its location and locking the device if the dispenser is not at or within a fixed location.