Mike Murphy joins the show to talk about the tech industry's push for vaccine passports. Then Issie Lapowsky talks about Facebook's latest moves in Australia, before Hirsh Chitkara joins to discuss how chess became a streaming giant.

For more on the topics in this episode:

Mike on TwitterBlockchain, QR codes and your phone: the race to build vaccine passportsIssie on TwitterFacebook says it gladly pays for news, but rejects 'open ended subsidies'Facebook made a deal to get news back in AustraliaHirsh on TwitterHow Chess.com built a streaming empire

For all the links and stories, head to Source Code’s homepage.

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