An invisible hyperlink marker

In this paper, we propose an invisible hyperlink marker, by which users can easily get information related to articles in paper media, similar to hyperlinks in the Web. Users get information using a device such as a mobile phone by illuminating the marker with a blacklight and taking its photo. A new skipbit coding method makes it possible to embed information even in articles that absorb or repel the invisible ink. Experimental results proved that information can be extracted from the markers printed on top of materials such as newspapers and brochures in about one second using a prototype mobile phone.