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The tech giant tells developers future Macs will use Apple-designed chips as found in the iPad and iPhone. Plus, as shops reopen after lockdowns, how can tech make physical shopping safer and more pleasant? And CEO of Slack, Stewart Butterfield, talks to us about communication between businesses, and how President Trump’s ban on work visas will hurt Silicon Valley. Presented by Rory Cellan-Jones, with ³ÉÈËÂÛ̳ North America tech reporter James Clayton. Produced by Jat Gill.

(Image: Apple CEO Tim Cook gives the keynote address at the 2020 Worldwide Developers’ Conference WWDC, Credit: EPA/ BROOKS KRAFT/ APPLE).