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Key Security with RFID Technology

As critical components of a large number of access control systems, key fobs work via radio frequency identification (RFID) technology. This turns them into practical, highly efficient, and easy-to-program options for many people. However, there are several risks associated with using this technology. This is where RFID-based technology key pouches and blocking wallets come into the picture. They are excellent ways of securing RFID cards and preventing them from being cloned. rfid key fob protection

If you are interested in learning more about the main RFID key fob types, understanding how RFID encryption works and the best ways to secure RFID cards, keep reading.

How Does RFID Encryption Work?

As mentioned previously, RFID key fobs or key tags represent important parts of larger security systems that also include RFID readers. Often referred to as hardware tokens, RFID key fobs can be easily programmed to offer access to a variety of physical objects. They provide one-factor authentication solutions to simplify getting access to a certain device or system. The list includes anything from computer systems, cars, restricted areas, mobile devices, entire network services, and a variety of other keyless entry systems.

Mostly used by business, home, or car owners to strengthen protection on their property, RFID key fobs contain short-range radio transmitters or RFID chips and antennas. They use radio frequencies to send coded signals to specific receiver units found inside the device. The same receivers also encompass RFID tags that are used to store information.

RFID technology works by encoding digital data into RFID tags that can be then stored and read from the RFID card later on. This means users are not asked to unlock their devices using mechanical keys as they would normally do with a manual lock. This automatically means that, besides offering remote access, the technology used by key fobs makes them more secure and convenient to use. The fact that they can be deactivated when they go missing or are stolen is another excellent argument as to why key fobs are more advantageous compared to physical keys.

RFID Key Fob Types

There are three main types of RFID key fobs, depending on the frequency band in which they operate: low, high, and ultra-high frequency key fobs. These devices can also be organized into two big categories: active and passive. Common key fobs that are mainly used to get access to amenities like elevators, swimming pools, and gyms in apartment complexes, community centers, or condos are usually passive and low-frequency key fobs measuring 125 khz. A key fob that can exclusively open the front door of an apartment into a living space is considered a high-frequency key fob.

A key fob used to open a gate, the front door of an apartment's living space, or an amenity, is considered a dual-frequency key fob, either high or low-frequency.

How to Secure RFID Key Fobs

Thieves targeting cars with RFID key fob systems use relay signals that imitate the signals emitted by key fobs to unlock and start the engine. Our top recommendation to prevent this from happening is to use a protective RFID signal-blocking box, pouch, or wallet for storing your keys.

How Do RFID Key Pouches and Wallets Work?

These devices are meant to protect the cards from being cloned. This is achieved by blocking any and all unsolicited RFID transmissions. Faraday cages can also be used for storing RFID key fobs. These enclosures work by effectively blocking all electromagnetic fields and they match key fobs and provide them with enhanced nonstop protection. We also advise you to keep a Faraday box in the same spot where you normally store your keys and stash them inside instead. Some models are disguised as books and work similarly, blocking all electromagnetic fields signals both to and from the key fob while stopping any unauthorized access to the car or access door via fob relay. The same key fob cages or pouches also protect key fobs from potential damage caused by water or accidental dropping.

How to Choose the Best RFID Key Pouches?

Both Faraday bags and RFID pouches encompass specific materials including aluminum foil and copper helpful for blocking all signals to a wireless device stored inside them. This includes anything from a phone network to Wi-Fi, Bluetooth, GPS, key fobs for vehicles, credit cards, or something else. Knowing how to shop for the best protective pouches is vital. Here are our recommendations:

  • As a general rule of thumb, we recommend you steer clear of extremely cheap options since they are not always as efficient at blocking signals as branded devices sold by established names in the industry.
  • Opt for a brighter color like red or yellow or a model with a reflective strip on it. This is a good idea to prevent the pouch from getting lost easily.
  • Choose an RFID key pouch with a twin pack in case you need several key fobs protected at the same time.
  • Make sure the Faraday bag, pouch, or wallet is generous in size to fit your house or car key fobs.
  • Choose a model that features a carabiner clip for more convenience in use.
  • Opt for an RFID key fob pouch, wallet, or Faraday box that features an elegant design suitable for your luxurious vehicle.
  • Choose a model with an added keychain so you can easily carry the pouch with you.

Pros and Cons of RFID Key Fob Pouches & Wallets

While Faraday bags, RFID protection wallets, pouches, or boxes serve the same purpose, different models from different brands come with their pros and cons. Here is a quick rundown:


  • The light weight of these protective pouches and their classic design in most models make them suitable for all users.
  • Some models feature hidden cash pockets for more versatility.
  • Top-branded pouches and wallets offer enhanced protection and durability.
  • Some models feature magnetic openings, making their contents easy to access.


  • Some models feature tactical designs that may not appeal to everyone.
  • Cheaper versions do not offer good protection.
  • Not all models come with a slim design.

Now that you have reached the end of our guide, hopefully you know more about protecting your credit cards from RFID scanners and keeping your key fobs safe from cloning and hacking. For further assistance or expert key fob programming solutions, do not hesitate to get in touch with LocksmithsLocator!