Access Control
What is Access Control? (detailed)
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for concise version
Mechanical Access Control
Locks operate with a private code, eliminating
the problems associated with the issue,
control and collection of the traditional
keys. These products are effective in so
many applications, that almost anything
currently secured with a key can have the
security and convenience of a pushbutton
lock. This system also eliminates the use
of batteries or mains power due to it's
mechanical mechanism.
- Can be used on single, double and rebated
doors
- Available in many different finishes
- Some models available with key override
Electronic Keypads
A range of vandal resistant and architectural
keypads designed to be very easy to manage
and install. All changes to access codes
and other system settings can be done in
a couple of minutes just by using the keypad.
No dismantling to change link wires is required.
Versions to provide higher security on external
doors are available.
- Programmable from keypad
- Simple to install
- Runs from 12V power supply
- Cables sealed into the keypad
- Stainless steel waterproof version available
for demanding environments
Audio & Video Door Entry
Two way speech system via handset with
door latch on a press release button. Systems
can be audio only or with a black and white
video panel. Some models provide picture
storage enabling monitoring while unmanned.
- Multiple handsets available
- Complete kits for DIY use
Card Access
Internal and external units available with
fully encapsulated electronics. LED indicators
provide indication of access when the card
is swiped and alarm units can also be fitted.
- Pre-coded cards for easy set-up
- Simple wiring and installation
- Slimline design
Proximity
Proximity readers detect the presence of
encoded cards or fobs which release the
locking mechanism. There are wide selection
of readers to suit a variety of applications.
Cards and fobs are individually coded allowing
flexible voiding of users. Proximity is
the best simple access control system on
the market. These units employ the shadow
card system originally invented by Paxton
Access.
- Handle up to 20,000 users
- All users are valid initially
- Easy to avoid an individual card
- Simple installation
- Fully encapsulated electronics
Proximity
Proximity readers detect the presence of
encoded cards or fobs which release the
locking mechanism. There are wide selection
of readers to suit a variety of applications.
Cards and fobs are individually coded allowing
flexible voiding of users. Proximity is
the best simple access control system on
the market. These units employ the shadow
card system originally invented by Paxton
Access.
Access control is the management and control
of people through secured areas. These areas
could be within a building or a group of
buildings, or even through a parking lot.
Unlike keys and locks, access control defines
the times and days of the week that persons
are allowed access and provides a record
of who went where and when.
Events considered part of a complete access
control system may include controlling and
monitoring the entry points to secured areas,
or reporting doors being forced to propped
open.
Access control systems begin with small
standalone systems controlling access through
single doors and expand to large computer
based systems controlling hundreds of doors
in multiple buildings from a centrally located
host computer.
Access control systems are made up of four
basic components; cards, readers, controllers
and software.
Cards
There are three common types of cards:
magstripe, Wiegand and proximity. Of the
three, magstripe is the most common due
to low price and availability. Although
proximity cards are becoming more popular
because of ease of use and recent price
reductions closing the gap between proximity
and magstripe. Proximity availability is
still a problem.
Magstripe security cards are plastic cards
with a magnetic stripe on the back similar
to credit cards. Today's quality security
cards use high energy stripes which are
chosen over low energy cards (such as credit
cards) because they are difficult to accidentally
erase.
Magnetic stripes generally have three tracks
on which information can be recorded. The
security industry standard is to record
information on track two.
When you purchase an access control system,
the system security cards are commonly encoded
for you with the customised coding of the
system purchased. If you are changing system
manufacturers, check with your new systems
installer to see if cards from the system
being replaced are acceptable for use in
the new system. This is important, especially
if photo ID cards are being used.
Wiegand cards are manufactured with tiny
magnetic wires embedded in them that form
a binary coded card number. When a card
is passed through a Wiegand card reader
this unique card number is read and sent
to the systems controller.
Proximity cards are read when the card
is passed close to the card reader. Standard
proximity card readers read from distances
of 7,5 to 18 centimetres. Other types of
proximity readers will read at greater distances
(some reach as much as 9 metres) and their
price reflects this. Proximity readers are
generally more costly than magstripe readers,
however, their prices are coming down. Ease
of use is the major attractor to this technology.
Card technology
In many instances, technologies may be
changed, or even shared within access control
systems. For instance, depending on the
manufacturer, Wiegand systems may be easily
changed over to proximity or magstripe and
vice versa by changing out the readers and
cards and still retaining the same controllers
and software.
Controllers
Controllers are an important part of any
access control system because they control
access through the door, monitor alarms
and in some cases provide timed control
of doors. When distributed processing is
supported in a controller, decisions are
made at the controller to let cardholders
through secured doors from databases downloaded
from the computer and stored at the controller.
Not only does this make the processing of
card data very speedy, but if the computer
fails or communication between the computer
and controller breaks down, access control
will still function at 100% and not in some
degraded, reduced capacity mode.
Software
This is the final component to your system.
It is the operator interface which can make
you comfortable with your systems operation,
or sorry that you ever got rid of your keys
and locks. This software is where you or
your installing company will program your
many custom databases into the system. They
will set up your cardholder access parameters,
define timed automatic door control, map
input points to output points, enter phone
numbers for dial-up sites, and customise
various other 'things' allowing you to take
over and manage your system.
Automation
This is a feature which sets the well-designed
systems apart from the pack. Automation
will simplify your system so that operators
can spend their time managing the system
instead of trying to figure out which controllers
get the data for a new or deleted cardholder
or making sure that the data being downloaded
has been sent to all of the proper controllers.
Automation will map input points to output
points, not allow controllers to overflow
their logging memories, perform downloads
when database editing has been completed
and not allow excessive telephone calls
to buildings with communications problems.
Automation provides a 'set it up and it
will perform' attitude. It does what you
do not want your security personnel to worry
themselves about, and it does it exactly
as you directed it when you set up your
system, every time.
Expansion
What do I do when I want to expand? This
is an often overlooked point in selecting
an access control system. In the initial
selection process, the ability to inexpensively
expand your number of doors, personnel,
or alarm points at some future date, often
years away, does not seem important; but
it is. What if your wildest dreams were
realised and you found a need for doubling
the number of doors or securing other buildings
became important. Planning it from the start,
will provide you with your upgrade when
the need arises without spending serious
money in upgrade penalties.
Specifying your system
At the start, many system planners do not
really know what they need. They read the
ads and rely on canned specifications from
access control companies who only want to
sell their product, and thereby lock out
well meaning competition by placing 'things'
in the specification which their company
sells and others do not.
Plan your system to fit your own needs
by writing down what you can use today,
and try to determine what your future might
need. Remain flexible. Do not overspecify
unless you do it to satisfy your future
requirements; and then use that guideline,
'plan it now, buy it later'. Do not fall
for bigger is better, instead fall for inexpensive
expansion is better.
Education
Your system, if properly chosen and managed
will be of a minimum inconvenience to the
people that you are trying to protect. Certain
logistical guidelines must be integrated
with the physical system for it to run at
optimum effectiveness. These guidelines
contain such things as not propping doors
open, or carrying cards at all times. The
most important factor is to communicate
the guidelines to the cardholders. This
should be done both verbally as well as
in written form.
Price
Although price is always on your mind when
purchasing a system, think of how you will
support your system once it is installed.
Do not sacrifice ease of system use or support
maintenance for price. Your installing company
will educate you on how to use your system.
This may be the most critical 'piece' of
all! Price is always a consideration when
buying a system, but do not let it blind
you. What you are really paying for from
a company is their knowledge of how to install
and more importantly, maintain a quality
access control system. Just about any company
can pull wire and hang readers. Tying the
whole package together and making it work,
as well as providing education and maintenance
should be a top priority.
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