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Nowadays, the global is becoming a village. We can do many things easier and more quickly. Technology brings us the benefits and we can’t live without it. Here, we choose RFID as an example to tell you that something you need to know about. 7 frequently asked questions are gathered about RFID for you, to help you know what this technology is and how it changed our life.

1.What does RFID stand for?

RFID (radio frequency identification) is a technology that incorporates the use of electromagnetic or electrostatic coupling in the radio frequency (RF) portion of the electromagnetic spectrum to uniquely identify an object, animal, or person. RFID is coming into increasing use in industry as an alternative to the bar code.

2.What does an RFID system consist of?

An RFID system consists of three components: an antenna and transceiver  (often combined into one reader) and a transponder (the tag). The antenna uses radio frequency waves to transmit a signal that activates the transponder. When activated, the tag transmits data back to the antenna. The data is used to notify a programmable logic controller that an action should occur. The action could be as simple as raising an access gate or as complicated as interfacing with a database to carry out a monetary transaction. Low-frequency RFID systems (30 KHZ to 500 KHz) have short transmission ranges (generally less than six feet). High-frequency RFID systems (850 MHz to 950 MHZ and 2.4 GHz to 2.5 GHz) offer longer transmission ranges (more than 90 feet).

RFID systems can also be classified by the type of tag and reader. A Passive Reader Active Tag (PRAT) system has a passive reader which only receives radio signals from active tags (battery operated, transmit only). The reception range of a PRAT system reader can be adjusted from 1–2,000 feet (0–600 m), allowing flexibility in applications such as asset protection and supervision.

An Active Reader Passive Tag (ARPT) system has an active reader, which transmits interrogator signals and also receives authentication replies from passive tags.

An Active Reader Active Tag (ARAT) system uses active tags awoken with an interrogator signal from the active reader. A variation of this system could also use a Battery-Assisted Passive (BAP) tag which acts like a passive tag but has a small battery to power the tag’s return reporting signal.

3.What is the use of RFID?

RFID has many uses in our daily life, which spreads in commerce, transportation and logistics, public transport and so on. It appears with a look of tags, readers.

What is an RFID tag?

The RFID tag has an embedded transmitter and receiver. The actual RFID component contained in a tag has two parts: an integrated circuit for storing and processing information, and an antenna to receive and transmit a signal. The RFID tag has non-volatile memory storage and can include either fixed or programmable logic for processing transmission and sensor data.

RFID tags can be either passive, active or battery-assisted passive. An active tag has an on-board battery and periodically transmits its ID signal. A battery-assisted passive (BAP) has a small battery on board and is activated when in the presence of an RFID reader. A passive tag is cheaper and smaller because it has no battery; instead, the tag uses the radio energy transmitted by the reader.

RFID tags contain at least three parts: an integrated circuit for storing and processing information that modulates and demodulates a radio- frequency (RF) signals; a means of collecting DC power from the incident reader signal; and an antenna for receiving and transmitting the signal. The tag information is stored in a non-volatile memory. The RFID tag includes either fixed or programmable logic for processing the transmission and sensor data, respectively.

Tag’s uses

Tags may either be read-only, having a factory-assigned serial number that is used as a key into a database or may be read/write, where object-specific data can be written into the tag by the system user. Field programmable tags may be write-once, read-multiple; “blank” tags may be written with an electronic product code by the user.

The RFID tag can be affixed to an object and used to track and manage inventory, assets, people, etc. For example, it can be affixed to cars, computer equipment, books, mobile phones, etc.

What is the RFID reader?

An RFID reader’s function is to interrogate RFID tags. The means of interrogation is wireless and because the distance is relatively short; the line of sight between the reader and tags is not necessary. A reader contains an RF module, which acts as both a transmitter and receiver of radio frequency signals. The transmitter consists of an oscillator to create the carrier frequency; a modulator to impinge data commands upon this carrier signal and an amplifier to boost the signal enough to awaken the tag. The receiver has a demodulator to extract the returned data and also contains an amplifier to strengthen the signal for processing. A microprocessor forms the control unit, which employs an operating system and memory to filter and store the data. The data is now ready to be sent to the network.

Reader’s uses

A radio frequency identification reader (RFID reader) is a device used to gather information from an RFID tag, which is used to track individual objects. Radio waves are used to transfer data from the tag to a reader.

RFID’s uses

RFID offers advantages over manual systems or use of bar codes. The tag can be read if passed near a reader, even if it is covered by the object or not visible. The tag can be read inside a case, carton, box or other containers, and unlike barcodes, RFID tags can be read hundreds at a time. Bar codes can only be read one at a time using current devices.

RFID can be used in a variety of applications, such as:

  • Tracking of goods
  • Tracking of persons and animals
  • Toll collection and contactless payment
  • Machine-readable travel documents
  • Smartdust(for massively distributed sensor networks)
  • Airport baggage tracking logistics
  • Timing sporting events
  • Tracking and billing processes

These applications play an important role in our daily life. For example, when buying goods,  you can use it to pay and to track the shipment. Memorize the data and track it is the way to serve you to have a good experience.

4.What is RFID skimming?

Although RFID is helpful, not every successful reading of a tag (an observation) is useful for business or other purposes. Even it shows amount of data breach cases are increasing. The criminal behavior is called RFID skimming. Then what is RFID skimming? Let us tell you.

RFID skimming is a form of digital theft, which enables information from RFID based smart cards to be read and duplicated. It can be used as a form of wireless identity theft or credit card theft among other forms of information theft. Typically it works by the illegitimate reading of RFID chips at a distance using an RFID reader device, which downloads the card information.

The concern is that some credit cards, passports, and driver’s licenses now come with embedded radio frequency identification chips. When activated by an RFID reader, these chips transmit certain types of information wirelessly, so that you can verify your identity or even make a purchase without swiping your card. The downside: Anyone with an RFID reader can activate those chips and pick up whatever information they’re designed to transmit. And, if they’re sneaky about it, they can do it without your knowledge.
So, what can we do to protect our data from being scanned? There are many methods to solve this problem. But one is the most common and easiest— use the RFID blocking technology.We will tell you what RFID blocking technology and materials is and how it works for you as follows.

5.What is RFID blocking technology and material?

First, we need to know what the RFID blocking is. RFID blocking is a form of passive shielding of RFID signals through either a metallic encased wallet or a passive lined material RFID blocking wallet or RFID blocking sleeve like most you see on the market currently.

In fact, RFID blocking’s principle is using material to impede the signal. There are three primary methods—shielding, shielded containers, metal foil. Shielding attempts to block radio signals from reaching the tag by enclosing it within a container made of material that blocks electromagnetic signals in the RFID spectrum by acting as a Faraday cage. Shielded containers for regular use in the form of single-document sleeves, wallets, pouches, etc. Shielding is possible simply and inexpensively by wrapping a tagged object in aluminum foil, which can be configured as a sleeve permitting a card to be slid out. Informal tests found that the shielding effect was not 100% effective, though it did very much reduce the maximum range for reading, from about 1.5 feet (50 cm) to 1–2 inches (3–5 cm).

There are two materials which impede Radio Signals with incredible success… Water & Metal. Although you could fill a bag full of water and place your money, wallet, or whatever else in it, let’s continue with the metal route. A single layer of aluminum foil of only 27 microns thick is often enough to block the RFID signals of most readers or 1mm of dilute salt water. So…many RFID wallet was designed with aluminum foil embedded inside compared with water for its convenience.

6.How does an RFID wallet work?

Usually, we purchase RFID wallet to protect our information for its easy usage and convenience. Maybe many people don’t have a clear mind of this new kind of wallet.

RFID-blocking wallets are designed to help insulate you from a very particular brand of electronic pickpocketing, called RFID skimming. Now, almost cards have RFID chips in it. In 1979, the first radio frequency identification chips that can be implanted into other things are created. It has been spreading all around the world in the past decades. Now, they are everywhere in our life. How do the chips work?

They work by using radio waves to communicate. The object, such as a credit card, contains an RFID tag with information, and an RFID reader uses radio waves to read the information from a tag. The key is that RFID chips have tiny electromagnetic fields, which is what makes them possible to read without having to “initiate” communications. All you need is proximity.

That’s the reason why, in theory, that somebody could scan you through your pocket. And yes, people in the real world have been scanned like this.

Fortunately, radio waves are relatively easy to interrupt and block, and that’s how an RFID-blocking wallet works: they encase your credit cards in a material that interferes with radio waves. If the wallet is properly constructed to be a Faraday cage, it will block all electromagnetic fields and prevent communication between your cards and RFID scanners.

7.Do you actually need an RFID-blocking wallet?

Maybe, maybe not. If your credit cards don’t have RFID chips, then obviously you don’t need one. And even if you do have RFID-chipped cards, the chance of being maliciously scanned is exceedingly low — less than 1 percent according to some. On the other hand, the possibility is there and the chance is non-zero.


After reading these frequency asked questions about RFID, I guess you have known the fundamental knowledge. Other information about RFID will be updated soon. If you think it’s useful for you, please share it with your friends. Thanks!

If you’ve been wondering what all the talk about an RFID blocking wallet is and why you would need one, this post will help clear things up for you a bit. Radio Frequency Identification or RFID technology is rapidly becoming the norm for cashless transactions around the world, with almost all new debit and credit cards now using this technology. These cards, while fantastic for contactless shopping, are also easy targets for RFID skimming.

RFID skimming is a process in which criminals can steal your card details just by standing close to you. They can install a card reading device at the ATM or even commit this fraud at filling stations, bars, restaurants or any public place really. Once they have your information, they can duplicate or clone your card and spend a lot of money before you even find out. If you have an RFID enabled card in your wallet, you are very much vulnerable to RFID theft and an RFID blocking wallet is your only way to safeguarding your information.

Apart from all the biggest data breaches that happened across world, card fraud has been a major threat for a long time now and with the addition of contactless cards, the problem is only set to increase. Putting together a card-reading device is cheap and easy. Criminals can even simply download an app on their phone that does the work for them. In short, your data is at risk pretty much all the time.

RFID blocking wallets insulate your card from these electromagnetic reading devices and make your card safe against RFID skimming and data theft. Check out this infographic to know a whole lot more about how to protect yourself from these malicious threats.Here we gathered 5 essential points you need to know about RFID and RFID skimming for you:

[infographic] Understanding RFID Skimming: It's Time Block your personal data breach

Courtesy of: Bricraft

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<div style="clear: both;"><a href=""><img style="max-width: 100%; height: auto;" title="[infographic] Understanding RFID Skimming: It's Time Block your personal data breach" src="" alt="[infographic] Understanding RFID Skimming: It's Time Block your personal data breach" align="center" border="0" /></a></div><p></p> <div>Courtesy of: <a href="">Bricraft</a></div>
busy work with rfid protection

The Safer Approach to Using Contactless Payment Systems

Credit card fraud and stolen identities are not more than a mistake away these days. Everyone definitely gives a second thought to the idea of sharing their credit card numbers with strangers. They have become a very sacred and inseparable part of our lives. But it’s not so hard to get away with these types of crimes anymore. As farfetched as it may sound, it is possible for someone to steal your credit card information by simply standing close to you. This is especially possible if your RFID chips are embedded within your cards. As with several other methods of contactless payment designed for convenience, radio frequency identification credit cards let the users make payments simply by touching them to scanners. This is unlike inserting the card into a terminal or swiping it across which poses an even greater risk to users’ finances.

How to Guard against This Kind of Threat.

If a malicious hacker had to walk up to you and scanned your wallet, they could collect sensitive and important details allowing them to use your card even without your knowledge or consent. Fortunately, it is considerably easy to interrupt radio waves. There are RFID-blocking wallets that can protect your finances and prevent you from falling prey to their selfish plots. Proximity is the best channel they can get to you as RFID chips contain electromagnetic fields. This is what makes it easy to read without actually having to initiate communication. A wallet designed to be some sort of Faraday cage will block electromagnetic fields thus preventing communication between RFID scanners and your credit card. You may not necessarily need an RFID wallet. Much as the chances of being maliciously scanned are thin, it is safe to have a blocking wallet as you may never know when the imminent threat could attack.

The Criteria for Selecting an RFID Wallet

You can’t simply buy any old product that will perfectly suit your needs. This equally applies when it comes to purchasing an RFID wallet to hold your cards and/or your passports. Most people will go for something they actually like, somewhat jazzy but that aside, there are some very important factors you have to identify before picking just any other wallet.

rfid protection brown rfid wallet

Durability of the Material

The most recommended material for wallets is leather not just because of its good quality and luxurious attribute but also due to its durability and the longevity it comes with. Of course, you will find other materials in the market and it is obviously your personal decision. One thing that may discourage most buyers from purchasing a leather RFID wallet is the fact that it is expensive, which should not be a big deal. It is good value for money as you are guaranteed of long-term use and as a result, you won’t need to make as many replacements as with some of these less durable materials. For the lovers of anti-slash material, you will definitely have to cough up a few more bucks but it is totally worth it. It is only promised that you will get what you pay for in most cases. If you buy a product that is flimsy just because it costs lesser, it will not really serve its purpose. As a result, you end up losing even more than you bargained for and even worse, you could lose some of your documents from the wallet you buy. If you want something that does the job just right, find one that is sturdy enough to hold all your cards perfectly without risking losing some of them. It’s a great idea to buy the RFID wallet online but to be safer than sorry, you may need to look into customer reviews to confirm it is durable enough to hold items even if in excess.


Before buying an RFID wallet, the first thing that should be on your mind is the use you want to put the wallet into. It is only clear enough that the primary purpose for an RFID wallet is to guard against getting your credit card details or identity stolen by malicious people. Do you need the wallet to carry more than just one credit card or will there be a few other documents you will need to include? Passports also have RFID chips, which means you may also need to carry one or more in your wallet which means that you’ll have to find out to fit that in. If you intend to carry multiple cards with documents as well, ensure the wallet you buy has enough room to accommodate all you need to include in it.


There is a variety of products on the market for different budgets. It doesn’t have to be such a big deal and you may not necessarily have to plan before you can buy your RFID wallet. You also don’t have to splash too much cash to find one that suits your desires, requirements or needs. It is only obvious that if you want a fancy wallet, some kind of brand name with extra pizazz, you have to invest a little more than just a few dollars. Generally speaking, it is still very easy to find high-value products on a mid-budget range. Fancy doesn’t always promise quality although most brand names have been known to deliver far beyond the customers’ expectations.

Bricraft rfid blocking wallet trifold black

Security Features

RFID wallets are well-equipped with security features that protect you against identity theft as in the case of passports and losing the monies stored in your credit card. But that doesn’t mean you are immune from theft. Rest assured, if someone wants to steal from you, they will definitely know what to do. For this reason, you need to have a product backed with some kind of smart thinking behind the construction which will be equally as intelligent as thieves you are likely to encounter. The anti-slash fabric is great as it will protect you against anyone who may try to rip into the material of your wallet to steal the contents in it. The two materials that can effectively block radio waves are metal and water but you can’t fill up your bag with water in the name of protecting your money. Aluminum makes the best guard for RFID wallets so the next one you purchase will for one have a little of it, in lighter quantities of course. For those not entirely made out of it, there will be a strip of it placed in the internal body.


This isn’t always such a big deal. Standardly, the size of RFID wallet would barely exceed that of regular wallets. However, you will need something that big enough to hold all your items. This is where a wallet with several compartments comes in handy, to allow you keep everything in one basket and thus avoid any inconveniences. Particularly, an A5 sized wallet is sufficient enough to carry as many things as you may need to bring to a trip or just stepping out. Convenience is an aspect covered under the size of the wallet. Ensure it is just the right size to move around with and doesn’t weigh too much on you.

Which RFID Wallet Should You Buy?

RFID blocking sleeves are essential for the modern-day as they protect you from thieves who may skim to steal your financial information. This may force you to cancel credit cards over the anxiety of losing money from your bank account. They are also very convenient allowing you to just slide your card into your wallet giving you peace of mind whenever you leave home.

The disadvantage of using the aforementioned sleeves is the bulk they add to your wallet very quickly which is annoying in some kind of way especially if you have a preference for minimal thickness and clutter. Plus, they can be quite ugly if not matched well with the design of the basic wallet. It is also believed by some people that sleeves do not give ultimate protection from RFID scanners, and in this case, you only have the option of a dedicated instead. The following are two types of the most popular RFID-blocking wallets:
1. Slim Aluminum Foil Wallets
They are some of the cheapest available RFID wallets and is the most recommended for convenience. They are not just more affordable than several regular wallets, some also have a great look and take up minimal space if well-designed. A slim wallet makes an ideal option for carrying around cards fewer than five. There could be an allowance for up to 10 cards but there’s no point in buying a slim wallet to deform its shape and form. Aluminum is recognized as an inexpensive option for a shielding material in the construction of RFID wallets so you are assured that the next one you spot will be affordable enough. You’ll be glad to know that they are designed specially to be compact, lightweight and slim, which equals reliability. Some are even made to be waterproof but if you find such, you’ll need to spend a little more. The best of them are crafted uniquely from aircraft-grade aluminum and a powerful alloy of a high-strength polycarbonate and this blend vouchers for better physical protection.

2. Leather RFID Wallets
The cash band for these wallets is on the case. Surprisingly, the costly bit of it doesn’t keep off customers. It is, in fact, the reason why most people will opt for the products. Cheap is expensive, but leather is the best material that can be used in the construction of RFID wallets and it’s not just because of its luxurious attribute. It happens to be one of the most durable ones and having one basically wins you a lottery. These wallets are resistant to any kind of damage even when exposed to extreme conditions. For protection from radio frequencies, they are laced with an RFID shield that guards against losing your personal financial information and passport details with frauds and identity thieves. If you are traveling frequently, it’s the ideal option to bring to your trip. Leather RFID wallets can either be bi-fold or tri-fold.
Bi-fold Wallets
These make some of the most notable RFID wallets currently available in the market. Bi-fold wallets are surprisingly very rare which is why if you get this one, you have won yourself a jackpot. Construction is done on a very durable material-nylon microfiber which makes it extremely lightweight and enhancing its longevity. It is resistant to any form of damage even if subjected to intense and physical heavy daily abuse. Also worth mentioning is the vast amount of space. In it is a pocket big enough to keep bills as well as four main compartments for keeping cards, 2 extra pockets and a plastic pocket where you can keep your ID card. It is capable of holding up to twenty-five separate cards, but these are excess and can make you a little uncomfortable. Therefore, 10 cards are just enough to keep it stable and lighter.
Tri-fold Wallets
The market doesn’t stock too much of these at the moment. They provide the most space enough to accommodate several cards and a few bills. More or less, they are similar to most conventional wallets only they come with RFID protection keeping your passport and credit cards out of reach by digital pickpockets. Several compartments allow you store all your cards including your drivers’ license and ID card too. You can move around with peace of mind and will have nothing to worry even in crowds that are meant to make you vulnerable.

Do You Really Need a New Wallet?

It comes all the way down to how risk-tolerant you are. In case you are willing to spend for some peace of mind, it’s perfectly okay to buy one. However, if you are a penny pincher or you have higher priorities and bigger concerns to worry about, then you can pass the wallets over. Also, if you are a skeptic, there is a cheaper way to protect your credit cards without replacing your current wallet or having to spend too much. An alternative strategy to using avoiding financial losses through RFID credit cards is trying as far as possible not to walk with them. Cashless and contactless payments can be made through other methods such as Apple Pay and Android Pay both of which use a more convenient and safer NFC technology. We often move around with our phones, which are less prone to theft through radio frequency scanners thus guarding against financial losses. It is also very important to be conscious of your surroundings. You can preemptively avoid damage if you stay at the top of the digital identity theft red lights as well as finding out what credit fraud looks like and spot it sooner than it can get to you.


All things considered, the world is changing rapidly and with technological innovation on the rise, have found a new way of getting to your bank account. It is one of the channels through which they can exploit your vulnerability and you may never realize just how much risk you subject yourself to. Much has been said about the credibility of RFID wallets but they still remain the best shield against digital theft through credit cards. Everyone needs one of these to curb the threat we face because the offenders are always aware of when to strike. The best defense you can embrace is to be the smart one so that when the time comes, you have all your security needs in check.


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