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• Your nger is very dry.
• 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 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 ngers.
• Enroll and use a different nger for authentication.
• If your hands are too dry, apply lotion to them.
Notice on deleting data from your hard disk drive or solid state drive
As computers spread into every corner of life, they process more and more information. The data on your
computer, some of which is sensitive, is stored on a hard disk drive. Before you dispose of, sell, or hand over
your computer, be sure to delete data stored on it.
Handing your computer over to someone else without deleting the loaded software, such as operating
systems and application software, might even violate license agreements. You are advised to check the
terms and conditions of those license agreements.
There are methods that seem to delete the data:
• Move the data to the recycle bin, and then empty the recycle bin.
• Use the Delete option.
• Format your hard disk drive, using the software for initializing it.
• Set the hard disk drive back to the factory default settings using the recovery program provided by Lenovo.
These operations, however, only change the le allocation of the data, they do not delete the data itself. In
other words, the data retrieval processing is disabled under an operating system such as Windows. The
data is still there, even though it seems to be lost. Thus, it is sometimes possible to read the data by use of
special software for data recovery. There is a risk that people of bad faith might read and misuse the critical
data on hard disk drives for unexpected purposes.
To prevent leakage of data, it becomes very important that you take responsibility for deleting all the data
from the hard disk drive when you dispose of, sell, or hand over your computer. You can destroy the data
physically by smashing the hard disk drive with a hammer, or magnetically by means of strong magnetic
power, thus making the data unreadable. But we recommend that you make use of the software (payware) or
service (pay service) specically developed for the purpose.
For disposing of data on the hard disk drive, Lenovo provides the Secure Data Disposal™ tool. To download
either application, go tohttp://www.lenovo.com/support.
Note: Running the application will take a couple of hours.
If a hard disk drive or solid state drive with encryption technology is installed in your computer, you can
logically dispose of all the data on the drive in a very short time by erasing the cryptographic key. The
data encrypted with the old key is not physically erased but remains on the drive; however, it cannot be
decrypted without the old key. This feature is enabled by ThinkPad Setup Menu Extension Utility and is
available as a menu item in ThinkPad Setup.
Chapter 4. Security 59