Neural Hashes, Safety Vouchers and More Fun Terms Explained Apple’s tools for flagging child pornography and identifying explicit photos in kids’ messages caused backlash and confusion. In an exclusive interview, Apple software chief Craig Federighi sat down with WSJ’s Joanna Stern to defend the technology and explain how it will work. Illustration: Laura Kammermann/The Wall Street Journal Personal Technology With Joanna Stern Technology is overwhelming and making decisions about what gadget to buy is harder than ever. WSJ personal tech columnist Joanna Stern makes it all a bit easier in her lively and informative videos. More from the Wall Street Journal: Visit WSJ.com: http://www.wsj.com/ Visit the WSJ Video Center: https://wsj.com/video On Facebook: https://www.facebook.com/pg/wsj/videos/ On Twitter: https://twitter.com/WSJ On Snapchat: https://on.wsj.com/2ratjSM #WSJ #Apple #Privacy