A fluoropolymer is modified by contacting it with a modifying composition preparable from components comprising a phase transfer catalyst and at least one of a sulfide or disulfide salt, and heating the modifying composition. The method includes the following steps applied to encoded segments and by going through the segments in the opposite direction to their order: comparing the position of the current encoded segment with the region of the image to be accessed, and according to the result of the comparison, deciding as to the decoding of the current encoded segment. A graphic image is printed over the reflective ink layer. The non-contact power reception unit is configured to be magnetically coupled to a power transmission unit of an AC power supply to receive electric power from the AC power supply in a non-contact manner. The condition is a relative condition and is a function of a dynamic parameter of the battery and an empirical input variable. Accordingly, a call access processing adapted to use conditions of the user can be performed.