Is your smartphone listening to you?

It all began with a car crash.

I was doing some ironing when my mum came in to tell me that a family friend had been killed in a road accident in Thailand.

My phone was on the worktop behind me.

But the next time I used the search engine on it, up popped the name of our friend, and the words, "Motorbike accident, Thailand" and the year in the suggested text below the search box.

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