Google Chrome browser on iOS devices has a neat feature: The ability to lock incognito tabs with Face ID, Touch ID, or a passcode. Here
How to disable Incognito Mode on Google Chrome and Microsoft Edge
How to block incognito tabs with Face ID in Chrome for iOS
Browse privately in Safari on iPad - Apple Support
How to Use Face ID to Lock Chrome Incognito Tabs on iOS
2 Ways to Lock Chrome Incognito Tab With Face ID on iPhone - Gadgets To Use
How to lock Chrome incognito tabs behind Face ID on iPhone
Google Chrome Incognito tabs on iOS can now be protected with Face ID - SoyaCincau
Protect Your Private Tabs with Face ID or Touch ID So Others Can't Snoop Through Your Browsing Secrets « iOS & iPhone :: Gadget Hacks
Turn Private Browsing on or off on your iPhone - Apple Support
Chrome for iOS will soon keep incognito tabs even more secret with Face ID - The Verge
How to Lock Chrome Incognito Tabs With Face ID on iPhone and iPad - MacRumors
Protect Your Private Tabs with Face ID or Touch ID So Others Can't Snoop Through Your Browsing Secrets « iOS & iPhone :: Gadget Hacks