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RCG Holdings Limited. All rights reserved
Page 14 of 63
i4 Flexi Installation Guide v2.1
Card, Fingerprint and password verification:
i4 Flexi supports verification of card,
fingerprint and password separately as well as combined verification of card, fingerprint
and password. Separate card/password verification is useful for situations when a user’s
fingerprint is difficult to register or validate due to its poor quality. The combination of
card, fingerprint and password verification can improve the security of the whole
system.
Finger relevancy:
To enhance the user’s level of security, he/she may enroll two normal
fingers and a set of two finger relevancies (both enrolled fingers must be used for
verification), or register three normal fingers and choose to set two or three finger
relevancies (two or three enrolled fingers must be used for verification). Once finger
relevancies are set, the user must pass the verification for all finger relevancies to open
the door when conducting fingerprint verification.
FRR:
“False Rejection Rate” or FRR is measure of the probability the access system
will wrongly reject an access attempt; the system will refuse the access attempt from an
authorized user. A smaller percentage value reflects a better system.
FAR:
“False Acceptance Rate” or FAR is a measure of the probability the access
system will wrongly accept an access attempt; the system will accept the access attempt
from an unauthorized user. A smaller percentage value reflects a better system.
1.5 Operating Sensor
When using the fingerprint sensor avoid touching the sensor surface with any sharp or hard object
(be careful when installing the device). Always keep the surface clean. For cleaning, dip clean
absorbent cotton in water and apply laterally to the stain.
Position of finger placement
To get a clear fingerprint image, place finger closely on sensor in the correct position as shown in
the first two diagrams from the left in Fig. 3:
Fig. 3
The first two diagrams show correct finger placement. The other diagrams illustrate incorrect finger
placements.
Summary of Contents for RCG i4 Flexi
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