Wrist-mounted wearable tracks your hand in 3D using thermal sensors – Engadget

The scientists who created the device say it’s the first such system to look at the contours of the wrist. Also noteworthy here is the use of thermal imaging. Previous research in the area focused almost exclusively on traditional cameras, often to less than spectacular results. Prototypes developed by scientists in the past were bulky, difficult to use and could only distinguish between a couple of specific hand gestures. FingerTrack, meanwhile, can accurately track the position of the fingers even when the person wearing it is holding an object in their hand. 
While the technology could have a variety of applications, one of the more promising ones has to do with sign language translation. The team also sees a future in which FingerTrak could be used to detect the early signs of cognitive disorders like Parkinson’s and Alzheimer’s. It may also have virtual reality uses.
The usual caveat that comes with any recent research project applies here. It could be years before the team that created FingerTrak finds a way to commercialize their invention. However, what’s promising here is that the device employs affordable components and is already highly accurate.

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