It's time to order new business cards and I was wondering if we shoud print a QR Code, Microsoft Tag, or some other barcode on the back.? With MS Tag, you can enter your contact info on the tag, and folks with a smartphone can automatically add you to their phone's contact list just by scanning (photo) the tag. The problem is, MS Tag doesn't seem to work universally with every make / model smartphone. As for QR codes, I'm just learning about those, but I did recently see every item on the shelf at Best Buy plastered with one of these codes. I guess the idea is you scan the tag and the retailer pushes the corresponding sales information to you. Again, not exactly sure how it works? So I guess my question is: If you were going to put a scan tag (or tags) on the back of your business card, which one(s) would you choose? It seems like an obvious use for such tags, but I'm trying to figure out which tag will be the best choice. Thanks.