The challenge of authenticating real humans in a digital world. https://theconversation.com/the-challenge-of-authenticating-real-humans-in-a-digital-world-83918?utm_medium=email&utm_campaign=Latest%20from%20The%20Conversation%20for%20November%208%202017%20-%2087457291&utm_content=Latest%20from%20The%20Conversation%20for%20November%208%202017%20-%2087457291+Version+B+CID_95ca06a8340040619fd9e01dcd7f9916&utm_source=campaign_monitor_us&utm_term=The%20challenge%20of%20authenticating%20real%20humans%20in%20a%20digital%20world …