The prevention of counterfeiting labels for various products is addressed by introducing counterfeit-proof labels having an optically concealed, invisible universal product code.The label is printed on a high-resolution micro optic photo chromogenic material. The color bars of the code are optically split and compressed in high resolution image elements and arranged at the pre-calculated optical blind angles in relation to the optical center of the lenticule and the viewing distance of the label, and due to the optical effect of the micro lenticule, the complete color product code is not visible when viewing at a normal viewing distance.The camera of a mobile phone photographs the label at a close-up distance, with the lens of the camera regrouping the split image elements of all the color bars to reconstruct the product code that will be displayed on the screen of the mobile phone.