A method for updating a planogram representative of a retail area, the planogram comprising association data between articles of said retail area and locations of said retail area, said retail area having a plurality of shelf labels (10, 11, 12) distributed in said retail area, each of said shelf labels (10, 11, 12) being associated with an article and being disposed near a location associated with said article, each of said shelf labels (10, 11, 12) being associated with a unique label identifier, a label added to a shelf being considered as a label to be located, said method comprising the steps according to which, to locate at least the label to be located, - a mobile reading device acquires a sequence of label identifiers comprising the label identifier of the label to be located and further comprising the label identifier of an adjacent label (11, 12) relative to the label to be located in a scrolling direction of the locations of the retail area, the adjacent label (11, 12) being the previous label along the scrolling direction or being the next label along the scrolling direction, the mobile reading device comprising a displacement measuring member, the acquisition of the sequence of identifiers comprising a determination of a displacement of the mobile reading device between the electronic shelf label whereof the location is known and the electronic shelf label to be located, the location of the adjacent label (11, 12) being known, - the mobile reading device transmits the sequence of label identifiers to a computer system, - the computer system updates the planogram from the sequence of label identifiers, by determining • the articles associated with the labels of the sequence of labels, • the respective locations of said articles, from the order of the labels in the sequence of labels, a location of the label to be located being determined based on the known location of the adjacent label (11, 12) and based on a distance between the electronic shelf label whereof the location is known and the electronic shelf label to be located, said distance being determined from the displacement of the mobile reading device. - a mobile reading device acquires a sequence of label identifiers comprising the label identifier of the label to be located and further comprising the label identifier of an adjacent label (11, 12) relative to the label to be located in a scrolling direction of the locations of the retail area, the adjacent label (11, 12) being the previous label along the scrolling direction or being the next label along the scrolling direction, the mobile reading device comprising a displacement measuring member, the acquisition of the sequence of identifiers comprising a determination of a displacement of the mobile reading device between the electronic shelf label whereof the location is known and the electronic shelf label to be located, the location of the adjacent label (11, 12) being known, - the mobile reading device transmits the sequence of label identifiers to a computer system, - the computer system updates the planogram from the sequence of label identifiers, by determining • the articles associated with the labels of the sequence of labels, • the respective locations of said articles, from the order of the labels in the sequence of labels, a location of the label to be located being determined based on the known location of the adjacent label (11, 12) and based on a distance between the electronic shelf label whereof the location is known and the electronic shelf label to be located, said distance being determined from the displacement of the mobile reading device. • the articles associated with the labels of the sequence of labels, • the respective locations of said articles, from the order of the labels in the sequence of labels, a location of the label to be located being determined based on the known location of the adjacent label (11, 12) and based on a distance between the electronic shelf label whereof the location is known and the electronic shelf label to be located, said distance being determined from the displacement of the mobile reading device.