Abstract: A method is described for making electrically conductive tracks or areas within a material. By using as material cellulose or its derivatives; and by locally raising the temperature of a portion of the material, one can trace tracks in a simple, economic and fast way manner.

Abstract: There is described a transmission system of electrons, comprising (i) a transmitter of electrons comprising a first source of a first magnetic or electromagnetic field, and a source of electrons capable of injecting electrons into the first field, and (ii) a receiver of electrons comprising a second source of a second magnetic or electromagnetic field with opposite polarity to the first field, and a receiver of electrons to extract electrons traveling in the second field and coming from the first field. The first and second field have interacting lines of force between each other adapted and in which to make the electrons travel.

Abstract: To improve the power or signal electrical transfer it is described a n electric power/communication system (10). It comprises a first contact surface (22, 24, 32, 34), adapted for being fed by a source (60) to transfer electrical power and/or signal, which is comprised on a surface in sight of a vehicle; and a garment (50) having a second outer contact surface (52, 54), adapted for conducting electric energy and/or receive electrical power and/or signal for a user device (70), which is configured to be able to touch the first contact surface in order to receive electrical power and/or signal.