Lenovo 20AA Laptop User Manual


 
2. Apply light pressure and swipe your nger across the reader in one smooth motion.
Maintaining the ngerprint reader
The following actions could damage the ngerprint reader or cause it not to work properly:
Scratching the surface of the reader with a hard, pointed object.
Scraping the surface of the reader with your ngernail or anything hard.
Using or touching the reader with a dirty nger.
If you notice any of the following conditions, gently clean the surface of the reader with a dry, soft, lint-free
cloth:
The surface of the reader is dirty or stained.
The surface of the reader is wet.
The reader often fails to enroll or authenticate your ngerprint.
If your nger has any of the following conditions, you might not be able to register or authenticate it:
Your nger is wrinkled.
Your nger is rough, dry, or injured.
Your nger is stained with dirt, mud, or oil.
The surface of your nger is very different from when you enrolled your ngerprint.
Your nger is wet.
A nger that has not been enrolled is used.
To improve the situation, try the following:
Clean or wipe your hands to remove any excess dirt or moisture from the ngers.
Enroll and use a different nger for authentication.
If your hands are too dry, apply lotion to them.
Chapter 4. Security 47