This is a BBC article about semacode/semipedia use in Africa. It is noted as being particularly relevant as names of building and streets in certain areas are constantly changing.

http://news.bbc.co.uk/2/hi/africa/6411961.stm

I was also reading about Snap Happy, an image-recognition based advertising service developed by a company called Mannequin Harlequin which is being used for the new Mr. Bean movie.

http://www.magharl.co.uk/index.php?page=mobile_marketing