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