So far, the details are slim, with the press release only noting that the 3-D DS will land on shelves sometimes between this April and next March, that it will play older, 2-D DS games, and that it won’t require 3-D glasses.
How the device will produce a 3-D effect without glasses has set off a wave of speculation. Initial theories focus on motion sensing, like in the iPhone game WordFu, or head tracking as utilized by the extant DS game 3-D Hidden Picture — see video below.
Either way, with Nintendo promising to unveil the new device at this year’s E3, we will only have to wait a couple more months before we find out.
[Kotaku and Ars Technica]
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There’s also a good chance Nintendo will use “parallax barrier” technology which is more sophisticated than the ones mentioned, and surprisingly affordable for being cutting-edge tech (about $20-$30 all up for two 4-inch screens).