1. A method of recording a medicament dose using a data collection device, comprising: capturing, by a video camera of the data collection device, a video showing a medicament dose indicator of an injector pen; adjusting a scale of an image in said video; adjusting, using a processing arrangement, said image for skew of one or more characters displayed on a component of the injector pen in said video; determining a position of at least one of said one or more characters in the image; identifying the at least one character using optical character recognition software; and determining a medicament dose indicated by the medicament dose indicator based on a result of said optical character recognition software, wherein the injector pen comprises a movable component for selecting said medicament dose to be dispensed.