'CardLasso' (from Model Metrics), 'Card Scan' (from Senstic), and 'Snabiz' (from Netwalk)
All promise to be able to scan business cards and transfer data into vCard / address book.
Sounds great, but all are having problems that they openly admit to (and have very bad reviews from people who have downloaded them in the App stores).
http://www.modelmetrics.com/solutions/lasso2go-platform/
http://www.lasso2go.com/
http://www.senstic.com/forum.aspx?g=posts&t=203
http://iphone.netwalk.be/content/snabiz
If I understand correctly the older iPhone models (ie not 3GS) did not have camera that was capable of sufficient focus to capture business card data, while the 3GS has a better (and sufficient) camera, it seems there are still software/hardware issues that prohibits business card scan/recognition.
Very disappointing.
If anyone can get this right, I would suspect that it could command a good price. For me, once such an app becomes available (and reliable), it will be one of the main reasons that I will finally invest in an iPhone.