As the missile nears its target, the Digital Scene Matching Area Correlation system takes over.

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The company said Facebook Exchange, which debuted in September and helps marketers target customers in real time by matching browser activity to the ads they see on Facebook, serves about one billion ad impressions each day from more than 1, 300 advertisers.

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Today, Target announced it was extending holiday price matching through the year, promising to match competitors advertised prices on products found both in stores and online.

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But for 2010 to 2011 they only have two commitments - real terms increases in health spending and matching Labour's 2013 target for 0.7% of GDP to be spent on overseas aid.

BBC: Osborne warns of 'tough' choices

And now Target has implemented a policy of price-matching Amazon for all of 2013 in hopes of slowing the trend to on-line purchasing.

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Price matching and coupons are two key weapons Target will be using this holiday season.

FORBES: Target Declares War On Online Competition

For this reason Target might have been better off staying away from price matching promises.

FORBES: Face It Target, You Are No Amazon (And Shouldn't Try to Be)

While price matching could be viewed as a defensive strategy, Target is also busy with its offensive strategies.

FORBES: Target Declares War On Online Competition

Both the 3D data (MPO format) and the JPEG data are saved. 3D Photo can be used in Auto (after the first shot is complete, the second shot will automatically be taken once the camera is moved to match the target) and Manual (after the first shot is complete, the user takes the second shot after matching the semi-transparent layers).

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