You can put Fingerprint Lock on Google Chrome without an app, turn it on like this

One of the most widely used search engines for Android smartphones is Chrome. And a special privacy-preserving version of this browser is the Incognito mode. This particular mode is available for handsets running iOS and Android operating systems. 

But browsing in talk mode on Android devices seems to be more enjoyable than iOS and desktop versions. Because Chrome developers are currently working on a special feature that will make browsing in incognito mode much more secure. In this case, this new feature will give the user the option to scan the fingerprint to access the incognito tab in Chrome.

Similarly, a button will also appear when using Incognito, which will show other previously opened tabs in Incognito. There will also be a menu option with three dots at the top of the window, where all incognito tabs can be closed at once. You can also access settings from here and close the incognito tab with the Chrome browser.

Chrome Incognito will offer fingerprint scanning option to provide more security

Chrome for Android users will soon bring incognito mode with multiple security features. In this case, you will get the benefit of the new fingerprint scanner feature when closing and opening the Incognito tab on your Android device. However, this is not a default set-on feature So you may need to enable this feature by going to Chrome settings.

For this, first tap on the three dots option at the top right corner of the Chrome browser. Then go to settings option. Now you will see an option written 'Privacy and Security', tap here. Here you will find a toggle button that says 'Lock incognito tabs when you leave Chrome', under which the fingerprint screen lock feature is available. This button should be turned on. (chrome browser > Settings > Privacy and Security > Lock incognito tabs when you leave Chrome: Use screen lock to see open Incognito tabs)