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ievo USER GUIDE
Getting started with ievo biometric solutions
9] 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 pro
blem 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.
You can enrol multiple images of the same finger from different angles, such as
lying your finger on both its sides and mid section.
Start with scanning the left side of your finger, and then keep scanning
different angles rotating to the right until a good scan has been
captured. If a registered finger is still not being identified, keep trying
different angles.
Fig.1
