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Microsoft Tag at the Crossroads of Virtual and Physical Worlds

Will Microsoft clear the field as it enters the location-based service market? Microsoft provides this definition of Tag, whose scope is larger than I realized:

“A Tag is a high-capacity color bar code… Organizations and individuals can create specific Tags by using the Microsoft Tag Manager Web service. When the Microsoft Tag Reader application is installed on a mobile device, [it] can be used to scan a Tag using the built-in device camera. When a Tag is scanned by the Tag Reader, the information encoded into the Tag becomes available on the mobile device.”