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Is this an impostor trying to break into your phone with his voice? Georgejmclittle/Shutterstock.com

Protecting your smartphone from voice impersonators

You can log in to your smartphone by talking to it. Current security systems don't protect enough against imitators. The best way to ensure voice authentication is secure is to start with the sound.
Dr. Kofi Amegah of the University of Cape Coast, Ghana, installing a small air sensing unit built by the University of Massachusetts. Kofi Amegah

Can we rely on DIY air pollution sensors?

Citizens and activists are using cheap off-the-shelf sensors to collect their own data on air pollution. It's a promising trend, but these devices have serious technical limitations.
Connecting cities should serve all citizens, not just a few. Illustration via shutterstock.com

How to ensure smart cities benefit everyone

Design will make the difference between smart city projects offering great promise or actually reinforcing or even widening the existing gaps in unequal ways their cities serve residents.
Still a few kinks to be worked out. Cory Doctorow

Will next-generation wearable sensors make us healthier?

We can already track plenty of body data, but to really make a difference, wearables need to consistently collect clinically valuable information that can be used to improve health.
Tractors may have revolutionised farming but to protect biosecurity, farmers could do with some extra help. Ben McLeod/Flickr

Go with the grain: technology to help farmers protect crops

New technology to tackle biosecurity challenges down the track is one of the five megatrends identified in today’s CSIRO report Australia’s Biosecurity Future: preparing for future biological challenges…

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