A Guide to RFID and NFC Access Control Systems

The security of a business is paramount. As technology evolves, the methods of securing access to buildings, resources and data have changed significantly. 

When choosing how to safeguard your entry points, some technologies are relevant to consider. 

RFID (Radio Frequency Identification) and NFC (Near Field Communication) are widely used by access control systems to authenticate users and grant or deny them access. Although NFC vs. RFID tags both use wireless communication, they differ in a few significant ways.

In this comprehensive guide, we’ll look at the in and out NFC and RFID tags in the access control systems.

An Overview of RFID Technology

What is RFID?

RFID stands for radio frequency identification. It is a wireless technology that transfers data between two devices using electromagnetic waves. 

The data stored in RFID tags is automatically detected by the RFID reader, which then stores the information for later processing. The RFID technique uses an antenna to read data from tags in a one-way transmission.

RFID readers with RFID tags or cards make up an RFID system.

• RFID tags and cards: These come in the shape of cards, key chains, or even microchips inserted under the skin.

• RFID readers: These gadgets talk to the tags or cards by sending out radio waves. They can be incorporated into portable electronics or fixed at entrance points.

RFID in Access Control System

RFID access control systems are well-known for their dependability and longevity and are extensively utilized in many different industries.

RFID-enabled tags are typically affixed to employees' ID cards or provided to them as separate office access cards in commercial access control systems. 

This offers a straightforward method for any business to implement an access control system that supports distinct login credentials.

How Does It Work?

A common protocol is used by all RFID-based access control systems:

• RFID readers use radio waves to locate RFID tags or key cards in the vicinity.

• After detection, the reader reads the data from the key card and sends it to the access control software along with the information it has collected.

• Once the data from the receiver has been processed by the access control software, the reader is instructed to approve or reject the entrance request based on the user's access level.

• The decision-making access panels that give or cancel permission are coupled with the RFID scanners. The access panel control hardware opens the door by using the instructions it receives from the access panels.

Advantages of RFID in Access Control Systems

• Long-Range Reading: these systems are ideal for applications where users might not need to be close to the reader because they can read tags at a distance.

• Multiple Tag Reading: RFID scanners can read several tags at once, making it possible to quickly and effectively manage access in busy areas.

• Durability: RFID tags are appropriate for outdoor use since they can tolerate extreme environmental conditions and are generally robust.

Understanding NFC Technology

What is NFC?

Near Field Communication is a short-range wireless technology that allows two devices to talk to one another wirelessly. 

An NFC device can function as both a tag and a reader, in contrast to RFID, and data can move back and forth between two NFC devices. NFC can only detect signals up to 4 inches away.

Smart tags can be activated on smartphones, enabling the devices to function as data transmitters and receivers.

NFC in Access Control System

These days, more and more people are using NFC access control systems. As opposed to RFID, they are far more desired because of their mobile access control. An additional degree of protection exists in NFC, which may distinguish between a trustworthy reader and a scammer because communication is two-way.

The following specific access data can be recorded by NFC access control:

• Accurate arrival time

• A particular access point was utilized

• How long was access allowed for?

How Does It Work in Access Control?

NFC and RFID operate on the same principle. In addition to employing key cards for data transmission, they also have the option of gaining access via smartphones.

• A secure channel is created when a smartphone or NFC key card is swiped or tapped over an NFC-equipped reader.

• The data on the tag is sent to a cloud-based server, where the user's access approval is verified.

• Then, based on the user's authorization, the Access Panels determine whether to give or refuse access.

Advantages of NFC in Access Control

• Convenience: NFC's short-range functionality allows users to quickly and easily obtain access by simply tapping their device or card against the reader.

• Widespread Adoption: NFC-based access control systems are growing in popularity as a result of NFC technology being incorporated into the majority of contemporary smartphones.

• Enhanced Security: NFC is a safe choice for sensitive areas since its close-range connection lowers the possibility of illegal access from a distance.

Key Takeaway

There is no right or wrong option when it comes to access control; the selection is based on you and your needs. The NFC Access Control System can be a better fit for your company if you are a valuable asset owner (information, devices, etc.) and safety is your top priority. But RFID should be your first option if you want a high-range, speedier access control solution.