iOS 11 adds ability to disable Touch ID with 'cop button'
https://www.cnet.com/news/ios-11-adds-ability-to-disable-touch-id-with-cop-button/
Apple has a new feature to easily disable Touch ID in iOS 11.
The feature, which is designed to aid calls for emergencies, allows users to quickly tap the power button five times to call 911 on an iPhone 7. A CNET reviews editor tested and confirmed the feature Thursday after seeing multiple reports.