1. A method of recording an interaction with a mail item, said mail item comprising a product contained in a mailing package, said mailing package comprising an interface surface containing mailing information, the interface surface having disposed thereon coded data indicative of a mail item identity and of coordinates of a plurality of locations of the interface surface, the method including the steps of: receiving, in a computer system, indicating data from a sensing device regarding the mail item identity and at least one position of the sensing device relative to the interface surface, the sensing device, when placed in an operative position relative to the interface surface, sensing at least some of the coded data in the vicinity of the sensing device and generating the indicating data using at least some of the sensed coded data; and identifying and recording, with reference to the indicating data, the interaction with the mail item.