- See also: QRpedia
Semapedia was a project which uses Data Matrix nodes to connect Wikipedia articles with their relevant place in physical space.
Placing physical semapedia tags on real-world objects allows people with mobile phones to use their built-in cameras to decode the Wikipedia-URL from the semacode. The phone can then use its internal browser to display the Wikipedia article of the physical object to the user.
The maintainers of the site have since closed down due to the more publicized (and thus more well known) QRpedia filling a similar roll. It still remains to be the first major attempt to organize phone code scanning for Wikipedia articles.