There is provided a system for the delivery of medicament comprising a medicament container; a dispensing mechanism for dispensing medicament from the medicament container; an electronic data management system; and a communicator for wireless communication with a network computer system to enable communication of data between the network computer system and the electronic data management system. A controller is adapted to, upon receipt of a selected command sequence comprising a first command followed by a second command, determine an elapsed time interval between the first and second commands. Individual arrays comprise multiple, parallel-connected resistor elements and the resistor elements are configured such that failure of any one resistor element will not render its associated resistor array inoperative for nucleating ink.