Microsoft has launched a version of Kinect, its voice and motion-controlled sensor, to work with Windows-based PCs.
It joins a previous version which was designed for the company's Xbox 360 games console.
The new hardware features a "near mode" which allows it to track movements as close as 40cm away, compared to 50cm on the original model.
However, the updated device costs nearly twice as much as the Xbox 360 version.
The sensor's UK price is yet to be confirmed, but in the US the Windows-compatible hardware's recommended price is $249 (£157).
By comparison the Xbox version is sold for $130 (£82).
Microsoft links the increase to enhanced features – including "skeletal tracking" and improved speech recognition – as well as the cost of developing a device that works across several systems, rather than a single games console.
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