I’ve been interested in semacode for a while. It seems like such a great idea: condense a webpage url down to a small square of code that can be snapped with a mobile camera phone; the software on the phone automatically decodes the semacode and takes you to the webpage.
So, for example a Harry Potter book on Amazon has the following web address...
http://www.amazon.co.uk/Harry-Potter-Half-Blood-Prince-Childrens/dp/0747584680/sr=8-3/qid=1160080505/ref=pd_ka_3/026-7768011-7418845?ie=UTF8&s=books
A bit long winded to stick on a poster or flyer and expect someone to type it into their phone or remember it by the time they get home.
But turn it into semacode and you have...a black and white square sematag.
Might not be pretty, but easy to add to communications. For example, a concert poster which would link you to a page to buy tickets. This is huge in Japan.
But there are so many uses for this beyond immediate sales or vouchering. It's a great chance to bring the story of a product right to consumers at the point of decision. You could add these to the back of bottles of wine to take people instantly to a site where they can read about the growers and wine region. Because the semacode design is so simple and scaleable, you can do interesting things like set the lights of a skyscraper's window to create a giant semocde that people can see for miles around.
One other interesting use is in hyperlinking geographical locations. The main project for this is semapedia. Here you create a semacode link toa wikipedia page about a geographical location. then go and stick the code up at the location for passers-by to interact with. Quite a nice way to find out what a statue is all about, or what happens in a building.
There's are several groups on flickr where people upload their semacode sightings from around the world...