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explain what is meant by a thermal camera. quite unclear
Turning your smartphone into a thermal camera

22 May 2015 Last updated at 14:30 BST

A thermal camera which can be fitted to a smartphone has been developed.

The Seek device, which can run on Android and iOS, is one of a few new mobile thermal image cameras and provides a low cost option compared to traditional devices.

BBC Click's Spencer Kelly reports.

If you click the link you can see a video.
It is a camera which you connect with your iPhone which then works as a display.
 
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