Patent ID: 8955751
Filing Date: 2015-02-17
Classification: G06K

Abstract:
1. A method for reading an electronic code, in which method an alternating electrical signal is brought to the electronic code being measured, with the aid of electrodes, and the current travelling through the electrodes, or the voltage over the electrodes, is measured, wherein the real and the imaginary components of the current or correspondingly the voltage are defined, the electrodes being on an essentially lossless surface, an angle correction is made to the real and imaginary components of the current or correspondingly the voltage, in such a way that substantial changes in the current or voltage take place only in the imaginary component of the current or voltage, and a measuring frequency of a measuring device, a reading distance of a measuring head from the code, and a resistivity of the code are selected in such a way that the reactance of the capacitance seen by the measuring device is of the same order of magnitude as the resistance of a conductive ink seen by the measuring device.