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RFID Access Control Explained and It’s Working

  • Administrator
  • Sep 29, 2022
  • RFID
 RFID Access Control

RFID technology is rapidly growing and expanding because more and more industries are using this technology. Talking about security, the RFID access control system is more complicated and impossible to read.

In this blog, we will help you understand the world of RFID-based access control.

What Is RFID Access Control? 

Radio Frequency Identification (RFID) uses electromagnetic fields that identify and tracks objects automatically. Most of these systems include a microchip with an antenna, a reader, and an access control server.

The system checks the data stored on the tag with the database and when it is a match then the access is granted. 

RFID Frequencies 

Frequency is basically the length of the radio waves that are required to communicate between the system elements. There are various frequency levels that decide the reading range. When the frequency is lower, the shorter will be the reader’s range.

When you know well about the frequencies of RFID systems you can easily choose the right solution. Radio waves operate differently at every frequency and there are pros and cons to each frequency band.

RFID access control system having lower frequency reads better, however, it is slower. Higher frequency systems can read data faster and longer read ranges.

RFID Tags 

These have three key elements: microchip, antenna, and substrate. The microchip stores and processes information and adapt radio-frequency signals. The antenna helps the tag receive and transmit the signal. RFID tags differ because of their power supply. There are two main types of tags passive and active tags.

Passive vs. Active Tags 

A passive RFID tag does not have a battery; so the built-in antenna takes the electromagnetic waves sent by the reader. These are less expensive than the active tags, and thus can be a cost-effective solution. They are also smaller in size.

However, there are also some limitations. As these don’t have a power source that’s why they require extra charging time. They also have less data storage capacity.

Active RFID tags do have a battery that allows the transmission of data stored directly to the reader. Batteries last for years. Being battery-powered they are perfect for applications where RF signals encounter interference. Active tags are more costly than passive tags.

How do They work? 

As they consist of tag, reader with an antenna, and an access control server. The card reader emits a radio frequency energy field. So when the card is within the field, the power energizes an aerial inside the card.

The aerial powers the chip containing data. This is then sent back to the reader. Finally, the reader sends the information to the system which decides whether the cardholder is authorized or not. As the lock receives this signal, it can then be opened.

Benefits of RFID Access Control 

Increased security: RFID access control systems provide improved security. Businesses can be carefree about the people entering their building. Every card is connected to identifying information.

Easier and Faster Access: A long-range electronic ID badge allows authorized members to access secured areas without using their hands; this enables them to enter the premises easily. This is useful when employees have to carry heavy objects.

Integration: It is a complete people and vehicle solution and is ideal for automatic vehicle identification that grants access to approaching vehicles without any manned gate, ticket stations, or pin pads.

This means that members can easily go from their doorstep to their workplace – this is just because of the card. A building access card is supported by a special holder in the car; this allows seamless vehicle access to the premises.

Manage the Flow of Staff Members: The best working RFID access control solution can enable organizations to track and monitor staff members and also visitors because they have access control software. With this software, they can check the real-time data that is relevant to each staff member and is stored to be used later on in reports.

Thus, managers can collect all the data of the key staff members and their movements inside the building.

If there is an unusual event or crisis, with the help of a surveillance system that is connected to the readers, it can notify the access control system to lock or unlock certain doors, and can also cancel access to a particular person.

Disclaimer: The information presented here is for general information purposes only and true to best of our understanding. Users are requested to use any information as per their own understanding and knowledge. Before using any of the information, please refer to our Privacy Policy and Terms and Conditions.

  • Created on May 18, 2022

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