Stripe president and co-founder John Collison talks with Recode's Jason Del Rey about what's next for the online payments company, including international expansion and its experiment in machine learning, dubbed "Radar." To help it combat fraud, Stripe shows its users why Radar flagged a certain purchase as untrustworthy. Collison also discusses how he evaluates Apple Pay and Android Pay and why Stripe is interested in emerging technologies like Amazon Alexa.
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