An e-liquid cartridge designed to provide e-liquid for an electronic cigarette vaporiser system, the cartridge including a chip that stores and outputs (i) a unique identity for the cartridge and/or (ii) data defining the e-liquid stored in the cartridge, and the cartridge being adapted to be inserted into or form an integral part of the electronic vaporiser system. The data stored and output by the chip defines one or more of: flavor, nicotine strength, manufacturing batch number, date of manufacture, date of filling, tax data, quantity of e-liquid stored in the cartridge.
