Lenovo Preferred Pro, Руководство пользователя

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Chapter 5. Caring for the fingerprint reader
The following actions could damage the fingerprint 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 nail or anything hard.
• Using or touching the reader with a dirty finger.
Gently clean the surface of the reader with a dry, soft, lint-free cloth if you notice any of the following
conditions:
• 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 fingerprint.
You might not be able to register or authenticate it if your finger has any of the following conditions:
• Your finger is wrinkled.
• Your finger is rough, dry, or injured.
• Your finger is stained with dirt, mud, or oil.
• The surface of your finger is very different from what it was when you enrolled your fingerprint.
• Your finger is wet.
• A finger that has not been enrolled is used.
Try using the following methods if you have problems registering or authenticating a fingerprint:
• Clean or wipe your hands to remove any excess dirt or moisture from the fingers.
• Enroll and use a different finger for authentication.
• If your hands are too dry, apply lotion to them.
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