This is one time you'll actually want your device listening in

Worried the machines around you are always listening?

Alexa device

You might take comfort from knowing that some are listening for signs you require an ambulance, rather than to influence your shopping habits.

University of Washington researchers have developed a tool that’s apparently 97% successful at detecting agonal breathing — the ‘gasps for air’ made by around 50% of people having a cardiac arrest — from up to 6m away.

The aim is to develop an app for Alexa, the digital personal assistant, so it can call emergency services if it hears agonal breathing

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