Introduction
DIGIgarde PLUS User Guide
Last Change
Copyright
©
2012 TDSi
13 May, 2016
Page 3
1.3
1.3
1.3
1.3
Basic
Basic
Basic
Basic cccconcepts
oncepts
oncepts
oncepts
This section describes the main concepts behind fingerprint identification using
DIGIgarde PLUS:
User Enrolment
User Verification
Match Threshold
User ID Numbers
Privilege Levels
1.3.1
1.3.1
1.3.1
1.3.1
User
User
User
User enrolment
enrolment
enrolment
enrolment
You can enrol up to ten different fingerprints with each user ID.
When registering users, you should ideally enrol every finger and thumb. This
avoids problems with users forgetting which finger has been enrolled or being
unable to gain access because of any injury to the enrolled finger. At least two
fingerprints should be enrolled, left and right index fingers, for example, to provide
users with a ‘backup’.
1.3.2
1.3.2
1.3.2
1.3.2
User
User
User
User v
v
v
verification
erification
erification
erification
Verification is the process of assessing the identity of a user attempting to gain
access through the DIGIgarde PLUS. This may involve checking some or all of the
following: user ID, fingerprint, password (or PIN) or smart card.
1:1 and 1:N f
1:1 and 1:N f
1:1 and 1:N f
1:1 and 1:N fingerprint verification
ingerprint verification
ingerprint verification
ingerprint verification
There are two basic types of fingerprint verification:
If the user is required to enter their ID, then the DIGIgarde PLUS is only
required to match the scanned fingerprint against the template registered under
the User’s ID. This is called 1:1 verification.
If a user is not required to input their ID, the DIGIgarde PLUS must then match
the scanned fingerprint against all the templates in its database. This is termed
1:N verification.
The verification process may also involve checks of an input password. DIGIgarde
PLUS shows whether the user has been identified successfully and stores the
result in its internal memory.
Summary of Contents for DIGIgarde PLUS
Page 70: ......
