Biometric Time Attendance Reader ensures that no employee can punch in for another, which eliminates time fraud and reduces payroll costs.
Because every person’s fingerprint, iris, voice, retina face, hand, vein and signature are unique, a biometric time clock provides a quick, accurate,and reliable way to
record “In” and “Out” punches for each employee. That is why many companies now employ biometrics.
In recent times, there are large number of Biometric Systems that are commercially available. Such Biometric systems are based on unique characteristics of human being. The most common, reliable and successful system is the one based on Finger Prints. Users are supposed to put their thumb/index finger (or any specified finger) in the finger reader. The system then compares the finger print that is read with that in the central database for authentication.
Most of the Biometric Systems do not keep an image of the fingerprint but a template. A template is basically a number that is calculated based on various characteristics of the fingerprint. Such an approach is desirable so that unauthorised persons may not sneak in unauthorised images of finger print in the database. When a Finger print is to be matched, it's 'template' number is computed and compared with that stored in the database. Most systems allow for dry, greasy, chaffed and minor cuts on the fingers. The other biometeric systems are based on 'Retina of the eye', Palm, photograph or voice pattern recognition. The Palm based systems take the image of the palm from various angles and compare the same. The system that is based on Finger Prints is most popular and economical.
PROXIMITY CARD SYSTEMS
The core of Proximity system is the Proximity Reader and Proximity Card. There are two types of readers in
the market - One that has an inbuilt controller with
capability to authorize access with or without being
connected to a PC. The other kind requires a PC to be
connected at all times.
Depending upon the configuration of the premises, one
or more readers may be used. If more than one reader
is used then it is called a Networked system, which
is usually connected to a PC. Some systems use a 8 core
or a 16 core wire for connecting all the Readers while
some systems use only 2 core wire, thereby reducing
the cost of wiring and maintenance.
The better systems have readers that can be used interchangeably
in a standalone or a networked configuration. Also,
some systems have bulky controllers attached to the
readers that require a separate source of power as well
as add to the cost. The current day readers have built-in
controllers and can be directly connected to a PC.
Another use of Proximity systems is to record attendance
for employees. For recording attendance, minimum two
readers are required - one for IN and one for OUT. The
employees are supposed to show their cards to the appropriate
Reader upon arrival or exit. These transactions of IN
and OUT are recorded in the attached PC. From the PC
various reports can be printed.
Most of the Access control systems come with ready
made attendance software as an option.
The advanced Proximity Based systems come with inbuilt
Password Based system too. It is possible to specify
if the employees can enter using Password alone or Proximity
Card alone or Both are required. Such an option gives
additional flexibility to define the Access Policy for
PC BASED ACCESS CONTROL SYSTEMS
The systems currently being offered in the market come
in with variety of features to cater to different types
of requirements. Along with the basic security functions
of validating and controlling access, the PC based systems
offer optional features like Time and Attendance, MIS
Reporting etc., providing the management with a lot
of value- added benefits. Some of the most useful features
Multiple entrance/exit monitoring. The capacities ranging
from a few users to hundreds of users - easily configurable
for organization of any size.
The system can interface with the personnel information
files that may be there already in a computerized environment.
This makes the installation quick and reduces the data-entry
Flexible Time zones - highly useful for controlling
entry / exit as per shift timings; Basically, the PC
based systems offer the possibility of programming the
rules of entrance and exit.
PC based systems are very user friendly and offer unmatched
flexibility in setting up various parameters.
PC based systems also keep the record of the transactions
on the hard disk for extended periods of time.
User selectable personal identification numbers - provides