Want to sell a water bottle for $1,500? Slap a Theranos label on it. This merch is all the rage on eBay — here's why. Plus, Big Tech predicts a future without passwords and TikTok videos show what it's like to live with dementia. I'll tell you how to find hidden trackers and turn an old PC into a home media server. Also, these mental health apps can compromise your privacy. Learn more about your ad choices. Visit megaphone.fm/adchoices