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3M unveils "smart pen" for touchscreens at CES

3M says the pen is more precise than a finger and cuts down on fingerprints on tablets and smart phones. A handful of Minnesota companies are rolling out new products at the Consumer Electronics Show.
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3M says the pen is more precise than a finger and cuts down on fingerprints on tablets and smart phones. A handful of Minnesota companies are rolling out new products at the Consumer Electronics Show.

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