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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 may not be able to register or authenticate it:
• Your nger is wrinkled.
• Your nger is rough, dry, or injured.
• 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 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 might be sensitive, is stored on the solid-state 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 program, 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 solid-state drive, using the software for initializing it.
• Using the recovery program to set the hard disk drive back to the factory default settings.
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 this data can be retrieved and used for unexpected purposes.
To prevent leakage of data, it becomes very important that you take responsibility for deleting all the data
from the solid-state drive when you dispose of, sell, or hand over your computer. You can destroy the data
physically by smashing the solid-state 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.
Chapter 4. Security 55