Wearable Tech That Could Help You Sleep Better

New wearable gadgets that target the brain could help you fall asleep faster and improve the quality of your slumber. WSJ science bureau chief Jo Craven McGinty joins host Julie Chang to explain how the tech works. Plus, PayPal will start sharing customer data with third-party retailers. We'll tell you how that data could be used and what it means for PayPal users.

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New wearable gadgets that target the brain could help you fall asleep faster and improve the quality of your slumber. WSJ science bureau chief Jo Craven McGinty joins host Julie Chang to explain how the tech works. Plus, PayPal will start sharing customer data with third-party retailers. We'll tell you how that data could be used and what it means for PayPal users.

Sign up for the WSJ's free Technology newsletter.

Learn more about your ad choices. Visit megaphone.fm/adchoices