Lately, you often see some of these mosaics in black and white placed on posters, leaflets, flyers, magazines and other similar surfaces, apparently without any sense.
Their operation is similar to bar codes, or an 'information with the appropriate decryption device, but the information in question are links and multimedia device is a mobile phone with any mobile phone camera.
Taking a photo to link the code is decrypted by the software and automatically opened in a browser window of the mobile phone, expanding the limits of 'hypertext outside the digital environment. The above, for example, printed and pasted into any place (or banal making a sticker) refers directly to this blog.
Here you can instantly create a Semacode and here you can download the software for the phone.
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