I bought this product a year ago after seeing it at the Macworld Expo and and initially liked it. But the initial excitement wore off quickly:
1.) When I synced with my address book, I lost all my address book entries. This is a rather big deal, so please make sure you back up your address book before you sync.
2.) I bought a new Mac recently and installed the cardscan software on that new Mac. To my surprise, it turned out that I was not able to use the software on both my old and my new Mac. I received a message that the license key was already used and that I had to buy a new one (for $207.99!). This is despite the fact that, when I bought the scanner and the software, there was no mention of any restriction of the license to one seat or one computer or one user. The order confirmation did not mention any license restrictions and the license agreement that is embedded in the software does not refer to such restriction. I believe strongly in intellectual property protection, BUT, but it is a very questionable business practice to disable the use of a product that a customer paid for in full until an additional (and, I might add, substantial) amount is paid when that was not part of the purchase or license agreement. Obviously, if taken to court, the company would lose. But if you are not prepared to go to that kind of trouble, you might want to stay away from this product. When I emailed the company inquiring about this business practice, I received no reply to my question.
3.) When it became clear that the company was not going do to anything about the random license restriction, I asked about the necessary steps to remove the software and all related files from my old Mac in order to be able to use the license key with my new Mac. Saying that this was like pulling teeth would be a huge understatement. I had to send 7 or 8 emails to finally get the answers. Mind you, this is something that is normally clearly stated on a software company's website or is even in the embedded help file. And even if not, it hardly ever takes more than one email to a software company to get clear instructions; not even from small software developers who don't have a dedicated customer support team.
If you plan on using this product on one computer only, don't plan on buying a new computer that you want to use the scanner with and don't plan on contacting customer support, you will probably be fine. Otherwise, I would think twice about buying this scanner.