Abstract: The invention relates to a method of consumer modelling for sales' promotions, comprising the steps of providing a plurality of points of sale, providing a plurality of computer devices respectively adapted to analyse consumer behaviour and deliver data based thereon to a point of sale, and providing a device associated with an individual point of sale of the plurality thereof for providing at least promotional material to a consumer making a sales' transaction at any individual point of sale. Thus, in the drawings, there is shown a point of sale location (1) which includes a scanner (2) of data relating to goods purchased by a consumer, not shown, a printer (3) for the transaction, a point of sale screen (4) at a point of sale transaction device (5) and a dedicated printer device (6).