Moto G5 and G5 Plus comes with Fingerprint Scanner on the front we have already posted Setup and working of Fingerprint Scanner. It comes with One button nav but does not have App lock feature. Here's How to lock apps in Moto G5 & G5 Plus using fingerprint scanner
Need to download App lock App from Google Play which is available free such as App Lock, App Locker: Fingerprint & PIN, AppLock – Fingerprint Unlock and more.In below Video we have used App Lock
First Download App- Set Lock - Privacy-Select Apps. Once this is done then users need to enable Fingerprint lock by going to protect.
Moto has included One button nav we can use fingerprint scanner to navigate You can find it on Moto App , Select Actions -One Nav button here's are Functions Swipe left to Go Back, Tap to Home, Swipe from Right to left to go back, Left to right to open recent apps, Tap and Hold to enable lock screen, Tap and Hold sensor until you feel long buzz to open google assistant. This also works fine
Fingerprint Scanner working