Dose counter and recording method

A dose counter for a metered dose inhaler comprising a force sensor, an electronic controller, a memory for storing data indicative of a remaining number of doses and an electronic display device coupled to the controller for displaying the remaining number of doses, said dose counter being attached or otherwise integrated into a base of a canister containing medicament such that force applied to the base of the canister is registered by the force sensor, said controller being configured to measure force applied to said dose counter when depressing said canister and measure a time duration of the depression of said canister, and said controller being responsive to measured force to decrement the remaining number of doses stored in the memory and shown on said display device when the measured force exceeds a defined minimum force threshold and the measured time duration exceeds a pre-determined and defined minimum time duration.