Fig. 11. The distortions in the salient regions of the above two enlarged and beautified QR code examples are (a) 0.33% and (b) 29.91%, respectively. Notice that these QR codes may take a longer time for decoding (or not decodable) due to their large version sizes. This means powerful camera and faster QR decoding software on the mobile phone are required to find the embedded content. For readers who try to verify the ability of their QR decoders, the embedded messages , in this example, are partial descriptions taken from Wikipedia which introduce what QR code is. (a) (35, )-QR code with messages occupies 5% of the total capacity; (b) (35, )-QR code with messages occupies 20% of the total capacity.