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Hello and welcome to TechTent, your weekly guide to all the hottest news and trends from

the technology world.

I'm Rory Gathland Jones, and this week it was supposed to mean an earthquake in the world of online advertising.

Finally, Apple's new iPhone software update designed to clamp down on the tracking of users has arrived.

We assess the fallout. Another great leap forward in

the use of AI in healthcare. We hear how machine learning can detect early signs of lung cancer.

And former British Prime Minister Gordon Brown tells us of his concerns that the pandemic has

widened the global digital divide.

Joining me this week is BBC's senior tech reporter Zoe Kleinman.

Hi, Zoe, what's been keeping you busy?

Well, Rory, all this talk about advertising has made me take a slightly closer look than usual at the ads that I get.

And I have to say, I think everybody thinks I have a really dirty bathroom.

...