A latching system 1 has a housing 3 provided with a recess 5 in which a part of the bicycle can be inserted, preferably a frame tube sloping upwards. The radio-frequency shield is arranged between the whole-body antenna and the basic magnet. Additional turnbars enable the matrix to direct the paperweb to exit in any number of directions with either orientation. A plurality of inter-engaging and overlapping locations include at least one of reduced thickness or notched locations in order to assemble into a seamless and constant width manner.