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This section addresses issues with fingerprint recognition and the U.are.U® fingerprint reader.

Fingerprint Recognition Troubleshooting

If the reader is having difficulty acquiring a scan of your fingerprint, read the following:
 1. The reader window may need cleaning, as described in “Cleaning the Reader”.
 2. You may not be touching the reader correctly. In order for the reader to acquire a good scan of your fingerprint, you must place the pad of your finger—not the tip—in the center of the oval window, and apply gentle, even pressure. Do not “roll” your finger. Pressing too hard will distort your fingerprint. Pressing too lightly will not expose a large enough area of your fingerprint.

Also, make sure to hold your finger on the reader until you see the reader light blink. This may take longer if the skin is dry. Then, lift your finger. Although you may use any finger with the reader, your index finger of either hand works best.

If the reader is capturing your fingerprint (as indicated by the reader blink) and you have tried all the above suggestions, you may need to reregister your fingerprint.


Device's Reader - Troubleshooting Tips

There are a few known reader issues:

If you activate your PC power saver function—but a third-party component installed in the PC does not support it—the PC will not go into sleep mode but the reader will. To reactivate the reader, unplug it from the USB port and then plug it in again.

If the reader does not light up when you plug it in, try unplugging it and then plugging it in again. Also, make sure it is plugged in to a self-powered USB port.


Cleaning the Reader
Depending on the amount of use, the reader window may need to be cleaned periodically.

To clean it, apply the sticky side of a piece of adhesive cellophane tape on the window and peel it away.

Under heavy usage, the window coating on some readers may turn cloudy from the salt in perspiration. In this case, gently wipe the window with a cloth (not paper) dampened with a mild ammonia-based glass cleaner.

Reader Maintenance Warnings

There are several things you should never do when cleaning or using the reader

* Do not pour the glass cleaner directly on the reader window.
* Do not use alcohol-based cleaners.
* Never submerge the reader in liquid.
* Never rub the window with an abrasive material, including paper.
* Do not poke the window coating with your fingernail or any item, such as a pen.
* The fingerprint reader is for indoor home or office use only.


© 2005 DigitalPersona Incorporated. All Rights Reserved.
DigitalPersona, the DigitalPersona logo, U.are.U and One Touch are trademarks or registered trademarks of DigitalPersona Incorporated.

All other trademarks and registered trademarks are property of their respective owners.

The above excerpts are from the DigitalPersona Maintenance Guide (page 1) It has been reproduced in this site purely for the benefit of U.are.U users who may have the need for such literature.