This tiny accessory gives your Android thermal vision superpowers (and works on iPhone, too)

Thermal cameras are infinitely useful, and this one from Thermal Master would be a fantastic addition to any Android user's toolkit.

• Super smooth and highly responsive app
• The tiny carry case can be attached to a keyring for easy transportation
• Needs the supplied USB-C extension cable to connect to most ruggedized smartphones

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Regular readers will know that I am a big fan of thermal cameras. They are cool and give you a view of the world you can't otherwise see, but they are also super useful and have become a key tool in my repair toolbox. I've used them for everything from spotting a faulty component on a circuit board to finding a wiring problem underneath floorboards.

A thermal camera is a super useful tool -- and these devices are cheaper ...