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Security Systems Toronto – Keeping Data Secure

security systems toronto

Whenever discussions turn toward security systems Toronto residents often visualize sensors, alarms, and surveillance systems associated with physical security. That may be due to the fact that equipment identified with physical security are very visible; after all, they form the first line of defense against intruders in both home, business or industrial settings. But that does not mean that you can ignore the need to secure your data. The truth is that data security supports physical security and vice versa.

Keeping Data And IT Assets Secure

These days, we are all interconnected through the internet. That means it is no longer sufficient to be vigilant about physical intrusions but unauthorized network intrusions as well. While most security systems Toronto focus on the physical aspects of security, you need to ensure network security is just as tight. Many individuals and companies have learned about the consequences of loose network security the hard way – you do not want your name added to that list. This article discusses the greatest cyber security threats.

In the simplest of terms, data access security is simply a set of measures taken to regulate who can view or use data contained in a network. And the basic principle involved is just as simple – to grant access only to people who need them in the performance of assigned tasks.

There are four main categories of access control: Mandatory Access Control, Discretionary Access Control, Role Based Access Control, and Rules Based Access Control.

Mandatory Access Control (MAC) is the most stringent of all. Under this system access to all resource objects are controlled by settings made by the system administrator. These settings cannot be changed by users. All resource objects are assigned security labels which contain access classification, and category. The classification defines the sensitivity of the resource (confidential, secret, etc.), while category is more of a description of management position, role, or project. Each user is also assigned a classification and category

When someone asks for access to something in the network, MAC checks to see if the classification and category of the user matches those of the resource. Only if both match is access granted.

Discretionary Access Control (DAC) is a system where the owner of each resource is allowed control over their own data. Under this system, each object or resource has an Access Control List containing names of users and permission levels. Thus some may have read-only, read-write, and others will have full access. It sacrifices a little bit of control for flexibility.

Role-Based Access Control uses the user’s job function in the company to determine access permissions. The functions or roles are separate from an employee’s position, and only one role may be assigned to an employee at any one time. Thus there is no way to give permissions that exceed those identified for a person’s role.

A network where the system administrator drafts a set of rules to control access is said to be under Rule Based Access Control. Access properties are contained in Access Control Lists linked with each data resource. Thus under this system it is possible to control access based on hours of the day, day of the week, etc.

Best Touch Screen Technology – A Comparison

best touch screen technology

Technology has never advanced as fast as it has in the past decade. That includes the technologies used for touch screens; existing technologies have improved, and new technologies have been developed. This makes it just a little difficult to determine the best touch screen technology, or even keep track of how many different ones there are.

With the number of different uses for interactive screens from smart phones, to information screens, ATM’s and interactive whiteboards, we cannot be faulted for comparing the different touch technologies. To arrive at a better decision, however, would require listing the pros and cons of at least the most popular touch technologies in use. Only when we have done that will we be able to decide the best touch screen technology.

The Five Most Common Touch Technologies

One of the most affordable touch screen technologies uses light to determine touch location. Infrared (IR) touch screens have pairs of infrared emitters and sensors installed on vertical and horizontal bezels around the screen. The infrared beams create a grid of light that gets broken when a finger touches the surface of the screen. This allows x and y location of touch to be established. These types of screens are durable and provide very clear images. However, these types of screens are sensitive to bright light, dust, rain, or snow, each of which can cause interferences.

Resistive touch screens are also relatively affordable. This type of touch screen has two sets of conductors; one set horizontal and the other one vertical. An inner layer usually made of glass has one set and the other set is attached to a flexible outer layer which is usually made of plastic, with spacers in between. When the flexible outer layer of the screen is touched, conductors meet, the resistance reading changes and the point of touch is established. These screens are reliable but suffer from poor scratch resistance and low image clarity.

Surface capacitive screens have two rigid panels which enclose a layer of charged transparent electrode. When a finger touches the screen, the capacitance varies just enough to enable the internal software to determine pint of contact. These screens offer clear images and fast touch response. However, they need to be touched by a conductor such as an uncovered finger, and are sensitive to EMI/RFI.

In projected capacitive screens, a chip projects a 3D electrostatic field whose capacitance varies when touched by a charged device which can even be a gloved finger; points of contact are then established. This is more robust than surface capacitive technology, but also suffers from EMI/RFI sensitivity.

Surface Acoustic Wave (SAW) screens work almost the same way as IR screens except they use sound transducers and receivers to produce a grid of ultrasonic waves instead of using infrared. Touch disturbs the sound waves enough to pinpoint location. SAW screens have clear images but are sensitive to solid objects, surface contaminants and water droplets.

It is clear that each type of screen has its strengths and weaknesses. The best touch screen technology for you would be the one which fit your intended use best. If portability is your priority, a recent article says the Japanese have developed foldable touch screens.