A cell phone which has been modified by the addition of software which responds to the press of one or more Busy keys by automatically sending a pre-typed text message to the sender of the latest text message just received or automatically answering an incoming call immediately upon pressing the Busy key and playing a pre-recorded audio message. The system also includes a scanning map creator and a flying spot scanning observation unit. The elongated radial stem can be in an off-center position in relation to a center of the lower surface. The loop-back signal may be detected by line monitoring equipment, where the attenuation imparted by the attenuator is interpreted as corresponding to the detected condition. A distance between the one diaphragm and the other wall part or the one diaphragm in the other wall part is changed with pressure difference between reference pressure in the hollow cylinder and pressure of an outside when a physical quantity is applied to the diaphragms. , andd) water, ande) a catalyst selected from organic and inorganic acids,to a method of producing a surface coating on a polymeric surface by applying the composition of the invention, and to articles having at least one polymeric surface which have the surface coating of the invention, and to their use.