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PROBLEM FINGERPRINTS
What is a ‘problem fingerprint’?
While the vast majority of fingerprints can be used with
ievo
fingerprint
readers there are a few occasions where some fingerprints can be tricky
to capture. These instances usually occur when a finger has been heavily
damaged causing permanent surface and subsurface skin abrasions.
While it is uncommon, studies have shown that one out of two hundred
fingerprints can be problematic when using biometric readers.
I have a problem fingerprint, can I still use biometrics?
Even though it may seem like the technology is against you, there are
methods that can be attempted to combat some problem fingerprints.
What can I do to combat a problem fingerprint?
When registering a known problem finger, or if problems persist with a
registered fingerprint, try registering all of the user’s fingers, including the
thumbs. This will help give the user a number of options when trying to
gain access.
To register multiple images of the same fingerprint access the ‘Manage
Fingerprint’ section of the
ievo
registration software. If using an alternative
registration software package, please refer to your user manual or ask your
software provider for assistance.
Another method is to registering multiple images of the same fingerprint
from different rotational angles. Start with scanning the left side of the finger,
and then registering multiple images of the finger as you roll the finger to
the right (see Fig.1). This will build up a full image of the finger from different
degree angles that may help with enabling the user to use the system. Keep
scanning different angles until the system states a good image has been
captured.
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