Radio Frequency Identification (RFID) is the wireless non-contact use of radiofrequency waves to transfer data.

Tagging items with RFID tags allows users to automatically and uniquely identify and track inventory and assets.

More commonly however RFID tags are used to access buildings such as gyms and apartment complexes.

Some of these can easily be copied and cloned so that you can have a spare one if you need it.

RFID takes auto-ID technology to the next level by allowing tags to be read without a line of sight and, depending on the type of RFID, having a read range between a few centimeters to over 20+ meters.

How does the radio frequency identification Card work?

In several wireless smart cards, RFID technology is being used. Radiofrequency identification Smart Cards save details on a smart card chip. The chip features an integrated safe microcontroller and internal storage. Both the card and the reader interact through their integrated antennas using radio waves.

If the card is placed into the reader’s electromagnetic field, the sensor in the card is activated. When the card is enabled, a wireless transmission interface is set up between the card as well as the data transmission reader. In the financial and banking market, Smart Cards have seen many uses not only for identity management, security systems, storage, health, travel, mobile connectivity, etc.

RFID Key Fobs

A key fob is a mechanical gadget that is tiny enough to connect to a keyring, which electronically opens or closes doors. The key fob has been the basis of the door access locking system since it began in 1983. Early devices, primarily used for car doors, rely on line of sight while using infrared lights but were highly susceptible to copying. Today, key fobs operate by reliable, stable, and computerized RFID technology.

A fob-key RFID is a single element of an RFID device that has two main components: a microchip, which stores the information, and an antenna for receiving and transmitting data. RFID key fobs are used in access controls such as apartments and hotel accommodation, authentication, mass transit, electronic payment, and much more. Key fobs may be cloned and hacked, hence it is vital that staff be trained to safely use, store and carry them.

How do key fobs work?

The RFID is the smart barcode technology that uses electromagnetic waves to classify and trace data on “tags” that hold encrypted data. The data travels along with radio signals. If you want to unlock the door with a key fob, just keep or wave your fob before the scanner.

Each fob includes a single frequency microchip that interacts with the readers and shows that the door must be unlocked. Fobs may be configured to enable access levels for various applications.

RFID Key Fob

How To Copy RFID Key Fob Using The RFID Reader?

If you choose to clone a key card, keep the strips or chips with the encrypted details of the card against the RFID reader to scan it.

  • Press the “Write” button on the reader while holding it. Now click the chip on the rear of the RFID unit’s newest switch, just as you did the original. Pressing the “Edit” button would indent the source fob data on the new fob, which will serve as an accurate duplicate of the source.
  • Instantly after duplication, evaluate the cloned key fob to ensure that it works. If not, make another attempt and start re-reading the source key.
  • You can make duplicate copies of the original fob as much as you like while using the “Write” feature on several blank tags. 

How to copy RFID cards (125khz) with an RFID copier?

The “Handheld RFID Writer” functions as follows:

  • Switch on the screen and hang onto the maximal grip side of the compatible EM4100 card or fob and press on the “read” command.
  • If it works, the system will then make a noise, substitute the replicated tag with a blank tag and click “Write”.
  • The data contained in the source tag is then transferred to the new tag.

What is an NFC Card

Two computerized devices can communicate with one another by using near-field communication (also known as NFC). For eg, an NFC card and a card reader can interact with one another having a reading range of approximately 4 cm providing more versatility than a contact card.NFC

How to Clone an NFC card?

NFC cards have no-cloning security. These cards are meant as easily readable information containers. Anybody can interpret NDEF from a card and repeat it into another card. Mifare NFC 1K Cards can be very easily cloned with an Android handset having NFC functions. Yeah, your smartphone could be used to jeopardize a firm’s safety by using this kind of card.

Only install Android’s “Mifare Classic Tool” and start making clones of cards that have never modified the default login credentials in the industry.

What are HID Cards

HID cards are products that use RFID communication technologies and are also known as prox cards, proximity cards, and access control cards. HID is one of the major suppliers of smart prox cards and provides a standard for prox access control devices.

They are easy to work with and compliant with all scanners of HID proximity cards. PVC HID cards can be easily printed and designed. HID identification cards are widely used in offices, workplaces, educational institutions for access control.RFID Security System

Can you Copy HID cards?

HID smart cards are best suited for applications where a stronger degree of protection is needed. Smart cards like the iCLASS product range of HID Global are almost impossible to replicate when appropriately handled. Any HID card cannot be cloned.

There are various formats of cards and different and specialized strategies might be required based on the type. The differences lay in the depth of encryption.

How to Defend against Card cloning

RFID is among the most popular encryption solutions and is also one of the simplest and easiest to clone. If you assume these cards are ‘secure,’ ‘safe,’ or ‘impossible to crack,’ it’s incorrect.

Because currently there are several different forms of card technologies, and “proximity cards” are the most insecure card types. So if anyone tries to clone an RFID card, it isn’t very difficult.

RFID Blocking Wallet

The only way to safeguard yourself against RFID cloning is to use an RFID-blocking wallet or cover. This works simply by suppressing the RFID’s signal. When there isn’t a signal interloper, the specific data on the device cannot be collected and it cannot be copied.

The drawback of this solution is how this is applied to a collective of workers with access cards. It should be a prerequisite for workers to use RFID wallets or covers to keep their cards secure.

Two-Factor Authentication

RFID cards can be easily copied. To secure these cards from cloning and unauthorized access we can use the second form of verification. This process is known as two-factor authentication.

Often access management systems pair a security card with a security question whose answer is only known to you.” In this process, you set up a security question and you are the only one with its answer. Another way to secure your card is by using your smartphone two to receive a code before access control.

Two-Factor Authentication

Mobile Pass Solution

Access Control company Brivo provides the Brivo Mobile Pass solution. This approach completely removes the need for actual RFID security cards and scanners. The Mobile Pass solution uses a mobile app to give access to secure doors.

Contactless Smart Card Technology

In contrast to 125 kHz, smart cards use 13.56-MHz. Its embedded systems can collect, process, and often interact through radio waves with a terminal. The correspondence between both the card and the reader, unlike proximity cards, is protected and secure. In this solution of security card systems, we use the incredible technology of SEOS. These cards are also suitable for information sharing and are ideal for logical access control.

Contactless Smart Card Technology

Frequently Asked Questions

Here are


The majority of companies around the world have security mechanisms in place and use RFID security key cards to decide who has access to sensitive parts of the company’s facilities. However,  these devices can be easily cloned, even from a distance of several yards, without anybody realizing their protection has been violated.

There are security features that can assist reduce the risk of employing RFID technology to manage physical access. The most straightforward method is to employ a contemporary RFID system with encryption capabilities. In order to give access to some highly restricted places, a genuinely comprehensive physical security system relies on numerous types of identification.

If your company already has dubious RFID privacy and is unable to modernize its infrastructures, there are still some simple procedures that may be taken to prevent RFID card cloning. RFID blocking wallets, for example, will prevent your cards from being copied by blocking any unwanted RFID signals.