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The document discusses augmented reality and its potential as a new mass medium. It describes two types of augmented reality - location based mobile AR and image/marker based AR that can be used on PCs with webcams or mobile devices. It outlines how AR uses features of mobile phones like cameras, GPS, compasses, internet access, and sensors. The document suggests applications of AR in marketing where big brands are already using it. It provides an example of an AR application called Conquar that has over 10,000 users across 14 countries. It encourages questions about the concept and viability of AR.