A method for manufacturing an electronic product comprising modules (14, 16, 18) having a radio communication protocol and communication means (20) is described. The modules comprise description data (40) which, when matched with product blueprint data (50) enable factory selection of the modules for a product. The interconnections between the modules within the product are partially replaced by a radio intranet (100) established by a primary module (16) of the product. The range of the intranet (60) may be constrained substantially within the housing (10, 12) of the product. The modules which may for example be separate display and keypad modules can, at the end of life of the product, be selected for reuse in other products according to respective product blueprint data (50) and their description data (40).

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> Radio device, transmission/reception directivity control method, and transmission/reception directivity control program

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