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> Supposedly implementing N-Trig over Wacom allows the device to be thinner

From the video, power consumption & latency were the driving factors.

That's strange, N-Trig used to be notoriously laggy when compared to Wacom. I guess the technology has come a long way.

There was a Penny Arcade[0] article a year ago talking about the drawing lag. I suppose Microsoft spent/spending quite a significant amount on the implementation.

[0] http://www.penny-arcade.com/news/post/2014/06/16/surface-pro...

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