A “tag” is a multicolored barcode that can be placed on (or in) a number of products and services, such as product packages or magazines. The Microsoft Tag application (which will be available for download on a number of handsets, including Windows Phones, the iPhone, and others) takes a picture of the unique barcode stamped on a product and relays all kinds of information about the particular item at hand back to you. Tags can push all types of information to you including websites, pictures, and video. “It’s the hyperlink in the physical world,” says a Microsoft rep. He also says MS will not charge for the app or for companies to place barcodes on their products. This is fun and all, but Microsoft is late to the game. I understand that the technologies are different (Tags can lead you to specific videos and other info), but heck–Google Goggles can search for a product’s information without barcodes!