Lenovo ThinkPad Edge E520 (English) User Guide - Page 84

2. Apply light pressure and swipe your finger across the reader in one smooth motion. Note: Your computer keyboard might look different from the illustration above. Care 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 fingernail or anything hard. • Using or touching the reader with a dirty finger. 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 fingerprint. If your finger has any of the following conditions, you may not be able to register or authenticate it: • Your finger is wrinkled. • Your finger is rough, dry, or injured. • Your finger is very dry. • Your finger is stained with dirt, mud, or oil. • The surface of your finger is very different from when you enrolled your fingerprint. • Your finger is wet. • A finger is used that has not been enrolled. To improve the situation, try the following: • 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. 66 User Guide