Abstract: The invention pertains to a method for applying radiofrequence identification transponders (14) to packaging sheets (120?), the sheets being obtained by cuts at intervals D in a band (120) of packaging material. The method is characterized by the fact that the said transponders (14) having previously been mounted on support (20) consisting of a strip-shaped flexible material with at least one transponder between each interval D, the intervals being defined by marks (26) on the support, the said support (20) is laid on the band (120) of packaging material lengthwise, in such a manner that the transponders (14) are placed on the band according to the said interval D, the transponders (14) are secured to the material, and the band (120) of packaging material is cut into packaging sheets (120?) with respect to the said marks (26). The invention also covers the transponders support (14).