because, by allowing tracking, you can be giving up way more information than you think! some examples:
- who you sleep with because both you and the person you share your bed with keep your phones nearby. [1]
- whether you sleep soundly at night or whether your troubles are keeping you up. [1]
- whether you pick up your phone in the middle of the night and search for things like "loan repayment". [1]
- your IQ based on the pages you "like" on Facebook and the friends you have. [1]
- your restaurant visits and shopping habits. [1]
- how fast you drive, even if you don't have a smart car, because your phone contains an accelerometer. [1]
- your life expectancy based on how fast you walk, as measured by your phone. [1]
- whether you suffer from depression by how you slide your finger across your phone’s screen. [1]
- if your spouse is considering leaving you because she's been searching online for a divorce lawyer. [1]
- journalists, lawyers, human rights defenders, and other innocent people are targeted. [2]
- LGBTQ+ people can be outed against their will. [3]