Time
Attendance Devices are required to effectively monitor employee attendance. The
need for a time attendance monitoring system grows with the number of employees
you manage. But choosing the right devices may be a difficult task, unless you
are an expert.
Listed below
are some important factors to consider while choosing a time attendance device.
1. Biometric
Device or Proximity Card reader(RFID) or both?
Biometrics
relies on the use of unique physical traits such as a fingerprint, a palm/iris
pattern, or facial characteristics to identify an employee.
A
non-biometric device such as an RFID device uses a proximity card to identify
an employee. Buddy punching is a main concern here as the employee can ask his
colleague to clock in with the card even when he is absent. Also, the employee
may forget to bring his card to work and then he won’t be able to clock in/out
the whole day. These issues won’t occur with a biometric device.
But, RFID is
faster in identification when compared to biometric readers. RFID is also
cheaper compared to Biometric devices.
Card
reader(RFID) and Biometrics in the same device
Some devices
support multiple identification mechanisms, such as Face, Fingerprint, RFID and
Password identification all in the same device. With such a device, employees
can use Face recognition while visitors can use proximity cards(RFID).
Face
Recognition or Fingerprint Identification?
Face
recognition is faster compared to Fingerprint identification. Face recognition
takes less than 1 second while fingerprint identification takes less than 2
seconds to identify an employee. If you have too many employees clocking in/out
at the same time, face recognition is recommended.
2. How many
devices?
This depends
on how many employees are clocking in or out at the same time. For eg; all your
employees may go out for lunch at the same time. In order to avoid long queues
you should carefully choose the appropriate number of devices. The number of
devices required varies according to the identification mechanism. You may need
more fingerprint devices compared to RFID or face recognition as fingerprint
identification takes longer.
3. What
Device Capacity?
Face/Fingerprint/Card
Capacity: It’s better to go for a device that has much more user capacity than
your requirement as the device would be fast in identifying employees, and you
will have room for new employees.
Transaction
Capacity: Since the software automatically pulls data from devices in
real-time, transaction capacity is not much of a concern. But it’s good to have
a device that can hold data for a month.
4. PUSH or
PULL?
PUSH: When
using PUSH technology, the device sends punches to the server whenever it
receives one. PUSH updates the server in almost real-time. The server should
have a static IP if communication with the server is over the internet.
PULL: When
using PULL technology, the server reads the device data in periodic intervals
and updates itself. If the communication with the server is over the internet,
it’s good if the device has a static IP, otherwise, you will need a software to
read the dynamic IP and to update the server.
5. What kind
of connectivity between device and server?
Internet:
The devices can communicate with server over the internet in both PUSH and PULL
mode. If you want the device to communicate over the internet, ensure the
device has TCP/IP.
Mobile
Network: If the device is in a remote location, it can communicate with the
server over a mobile network. Ensure the device has a 4G module.
Wired LAN:
If the device and server are in the same LAN, a wired connection is recommended.
If you want the device to communicate over the LAN, ensure the device has
TCP/IP.
Wifi: With
Wifi more of reconfiguration and troubleshooting may be required as wifi
routers change. If you want the device to communicate over Wifi, ensure the
device has Wifi option.
USB: With
USB, user will have to manually copy the data from device to software. This is
not a recommended option as the data cannot come to server in real-time. If you
want to use this option, ensure device has a USB port.
6. Do you need
Access Control?
‘Access
Control’ allows you to control a door or a turnstile as employees clock in or
out.
You may need
access control:
* If you run
an office and you don’t usually have customers walking in and you want to allow
access only to employees
* If you
have a server room, you want to allow access only to authorized personnel
* If you
want accurate attendance data and you don’t want your employees to forget to
clock in or out.
You may not
need access control:
* If you run
a super market and you have employees and customers walking in through the same
door
Access
control is more expensive as it may require the following components:
1. Door Lock
with brackets
2. Exit
Reader
3. Exit
Switch
4. Cabling
The
components required for an access control installation vary according to the
type of door or turnstile.
Wooden door
with a Wooden frame
If you have
a wooden door with a wooden door frame a normal Electro magnetic lock may be
good enough for you.
Glass door
with a Wooden frame
If you have
a glass door with a wooden frame you need an Electro magnetic lock with U
bracket.
Glass door
with a Glass frame
If you have
a glass door with a glass frame you may need an Electro magnetic lock with a U
and Z brackets.
7. Do you
need an Exit Reader?
When you use
access control you may need one device for entry and another one for exit.
Usually, the exit reader can be directly connected to the master device, and
all configurations are done only on the master device. It’s also possible to
have the same model of device for entry and exit.
8. Do you
need an Exit Switch?
When using
access control you can use a device for entry and a switch for exit. But this
is not recommended as the device cannot identify the employee who uses the exit
switch.
9. Do you
need a USB Port?
You should
choose a device with USB port if you would need the following:
* Option to
copy data from the device manually if other modes of communication fail
* Option to
copy face/fingerprint/rfid templates from one device to another
10. 5V or
12V?
If you want
to connect the device to a door lock and you want to supply power to the lock
from the device, you will have to choose a device that works in the same
voltage as your
11. Do you
need a printer?
If you want
to use the device in a canteen, you may need to print a slip as employee
punches; make sure the device is compatible with the printer.
12. What
device size and color?
Ensure that
the size and color of the device matches with your interior design.
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