MSO Fingerprint scanners Installation Guide
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2018_2000039830
October 2021
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7.2.4 Identify performances
The identify process compare the search fingerprint to all the records of the database.
The identify process compare first the search fingerprint to the 1
st
fingerprint (fingerprint
#1) of each database record. If a match is found, the comparison process stops, else, the
identify process compare the search fingerprint to all 2nd fingerprint (fingerprint #2) of
each database record.
It means that the identification process is faster when the user place on the sensor, a finger
which is recorded as the 1st fingerprint of the user’s record. It also means that the time
required to reject a fingerprint (No Hit) is higher than the time required to match with the
1st fingerprint of a record.
Number of records
Hit fingerprint # 1
Hit fingerprint # 2
No Hit
100
≤ 1 s
≤ 1.5 s
≤ 1.5 s
500
≤ 1.1 s
≤ 1.5 s
≤ 1.5 s
2000
≤ 1.5 s
≤ 2 s
≤ 2 s
3000
≤ 2 s
≤ 2.5 s
≤ 2.5 s
5000
≤ 2.5 s
≤ 3 s
≤ 3 s
Table 13: Identify performances
Please not that:
The measure starts with finger valid placement on the sensor and stops with result
returned to the host system.
the time value is intended for typical fingerprints : more characteristic points per
fingerprint (such as for a thumb fingerprint) means more time.
Add 1 second to ‘no hit’ time when ‘advanced matching’ is used (please refer to the
definition of ID_Matching_Strategy optional ILV in [R2] and [R4] documents)
The time value can be multiplied by 2 when ‘not oriented matching’ is used (please
refer to the definition of value 2 for Sensor_Window_Position ILV definition in in [R2]
and [R4] documents).
