Halo 4 'Capture the Poster' outdoor campaign

For the launch of Halo 4, Microsoft Australia created an interactive campaign ‘Capture the Poster’ which encouraged the Xbox online community and Halo fan base to participate in a real-world scavenger hunt.  Many of the posters used in the OOH campaign are rare, signed Halo 4 artwork. Snap a photo of one of them in either Sydney or Melbourne, using Tapit or QR, and if you’re the first, the poster will be mailed to you as a prize.
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Via: Campaign brief