Biometric Door Control Misconceptions

Do You Believe Facial Recognition Readers Store Your Picture? There are many misconceptions about science and technology. One of the misconceptions is that biometric IP door readers store a picture of your fingerprint or face. Another one is that the Earth is a flat disc that rests on top of four elephants, on top of

Low-Light Sensitivity of IP Cameras

For many applications, one of the more important characteristics of an IP camera system is how well it performs in low light situations. 

This article reviews the IP camera specification for minimum light level and the factors that affect the low light performance.

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Long Range Camera Systems – Custom Vs. Off-the-Shelf

Review of Long-Range Day-Night IP Camera Systems

Do you want to detect objects many miles away? While custom-made cameras are best for very long-range applications, the latest off-the-shelf cameras provide some of the same capability for less money. These long-range PTZ cameras are very cost-effective, and allow you to detect a person over 4-miles away. [Read more …

How to Ensure Video Chain of Evidence

One of the objectives of a video security system is to help law enforcement prosecute miscreants. It is important that this digital evidence follow the rules for chain of evidence so it will be acceptable by the courts.  It must be treated just like fingerprints, confiscated weapons, and other physical objects that need to be authenticated in court.  [Read more …

How to Set Up an IP Camera in Low Light Situations

What is the best IP camera for low light operation, and what are the correct settings? When it’s dark, there can be motion smearing and amplifier noise that degrades the image. 

This article provides guidelines for selecting the right camera and adjusting the image settings. [Read more ...]

Protecting Your Computer from Malware

The best way to protect your computer from attack.

What if you didn't have to worry about ransomware or any other viruses? Unfortunately, cybercrime has become a major problem for the Chief Technology Officer (CTO) who is tasked with protecting the company's computer systems, as well as the CEO who has to deal with [Read more …

Comparison of Security Provided by Door Access Systems

What Is the Most Secure Door Access Control System?


How secure is a PIN or a RFID card? Pricing for a door reader can range from less than $100 for a single door to over $1100 per door. What do you get for the money? In some cases, the security level provided can be crucial to your safety. How can [Read more …

Detection, Recognition, Identification: The New Criteria

Detection, Recognition, Identification - what are the Real-World Resolution Requirements?


I was not sure what to call this article. I first thought it should be titled, "Why The Johnson Criteria is Wrong." We use this criterion to predict how far away we can see something using a specific camera and lens. The criteria define the threshold for detection, recognition, and identification [Read more …

Comparison of Panoramic IP Cameras

How far can you see with an IP panoramic camera? A panoramic camera provides a very wide unbroken view in all directions. The panoramic view can be achieved using a single sensor or an array of sensors (or cameras). Single-sensor 360-degree or fisheye cameras have been around for many years. The latest high-resolution cameras provide [Read more …

Access Control and Fire Alarm System Integration

How to Integrate Access Control with Fire Alarm Systems Door access control systems control the electric locks. They allow authorized people to enter through the controlled doors. However, what happens in the event of a fire? The access control system could prevent people from escaping or prevent the fire department from entering the building. Many [Read more…