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The Nod ring, available later this year for $149, is a sensor-studded ring that acts as a Bluetooth motion controller for a variety of devices.

Published:Caption:Photo:Nod Labs
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Here's an early prototype of Nod. The final version will look smaller.

Published:Caption:Photo:Scott Stein/CNET
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The Nod is waterproof up to 5ATM, and has surgical steel on the inside band.

Published:Caption:Photo:Scott Stein/CNET
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There are 12 different sizes, so those who order one can get the right fit.

Published:Caption:Photo:Scott Stein/CNET
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The top of the Nod has a touch panel for specific controls in situations like keynote presentations.

Published:Caption:Photo:Nod Labs
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The Nod aims to work with PCs, Macs, Android, iOS, the Nest thermostat, Philips Hue lights, LG TVs, and even wearables like smartwatches and Google Glass with an open API and SDK for developing gesture-based apps.

Published:Caption:Photo:Nod Labs
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A look at the internal tech, which includes a nine-axis accelerometer and twin Cortex M3 processors.

Published:Caption:Photo:Nod Labs
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The Nod should last a day on a full charge.

Published:Caption:Photo:Nod Labs
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Pointing will control an onscreen cursor like an air mouse, but other gestures and multifinger motions will be supported.

Published:Caption:Photo:Nod Labs
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A demonstration with a working prototype.

Published:Caption:Photo:Scott Stein/CNET
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Wearing Nod next to an actual metal ring.

Published:Caption:Photo:Scott Stein/CNET
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