b'Welcome to TechCrunch daily news, a round up of the top tech news of the day. --Coronavirus fears prompt even more event cancellations --Controversial facial recognition software is being used widely --and DocuSign acquires Seal Software. Here\\u2019s your Daily Crunch for February 28, 2020. First up: Facebook has confirmed that it has canceled its annual F8 developers conference over growing concerns about the COVID-19 coronavirus pandemic.\\nLearn more about your ad choices. Visit podcastchoices.com/adchoices'