Which of the following is not an advantage of radio frequency identification

Radio Frequency Identification (RFID)?

Radio Frequency Identification (RFID) is a technology that uses radio waves to passively identify a tagged object. It is used in several commercial and industrial applications, from tracking items along a supply chain to keeping track of items checked out of a library.

Key Takeaways

• Radio Frequency Identification (RFID) is a type of passive wireless technology that allows for tracking or matching of an item or individual.
• The system has two basic parts: tags and readers. The reader gives off radio waves and gets signals back from the RFID tag, while the tag uses radio waves to communicate its identity and other information.
• The technology has been approved since before the 1970s but has become much more prevalent in recent years due to its usages in things like global supply chain management and pet microchipping.

Understanding Radio Frequency Identification

Radio Frequency Identification is used in conjunction with a microchip, a powered antenna, and a scanner. Although commercial uses for it were first developed in the 1970s, it has become more universally accessible in recent years. With advancements to the technology used to read and store information, it is now more affordable to purchase and adapt.

Radio Frequency Identification works through a small electronic device, usually a microchip, that has information stored on it. These devices are generally quite small, sometimes the size of a grain of rice, and can hold large amounts of data. While they don’t always emit electricity, some can contain a stored power source or batteries. The scanners used to read these devices can also provide enough electricity to allow them to read the microchip. There are many different uses for the technology, but it is commonly used in tracking products, animals, and currency.

RFID tags can be passive, and therefore powered by the reader, or active, and therefore powered by a battery.

Special Considerations

The technology is not without controversy. Due to the nature of how these devices work it is not inconceivable that someone who is not supposed to access the information on the microchips would be able to. There is also concern that personal information may become accessible without consent since these frequencies can be transmitted over larger distances than their more common counterparts, barcodes. Unlike barcodes and barcode readers, one does not need to be able to see the microchip to access the information on it.

RFID Use-Case Example

One of the more common uses of RFID technology is through the microchipping of pets or pet chips. These microchips are implanted by veterinarians and contain information pertaining to the pet including their name, medical records, and contact information for their owners. If a pet goes missing and is turned into a rescue or shelter, the shelter worker scans the animal for a microchip. If the pet has a microchip, the shelter worker will only be a quick phone call or internet search away from being able to contact the pet’s owners. Pet chips are thought to be more reliable than collars, which can fall off or be removed.

With the rise of accessibility of the technology, most veterinarians and shelters now have the technology to read these microchips. Universal scanners and national databases for storing owner information are also rising in popularity, making it easier than ever for microchipping pets to be a successful way to get lost pets reunited with their owners. One downside of the device is that the records must be kept up to date. The information is only as reliable as what is being imputed by the person setting up the microchip.

RFID refers to Radio Frequency Identification. It is a modern technology whereby leaders capture all the digital data encoded in RFID tags or smart labels via radio waves. It consists of three components which include:

• The RFID tag or smart label
• RFID reader
• Antenna

RFID tags transmit data to the RFID reader, converting the radio waves to a more unstable form of data. Thus, the tags information collected is used to transfer to the host computer system, where the data is stored in a database and analysed later.

RFID systems are used across different industrial sectors like construction, engineering, chemical industry, manufacturing, retail etc. RFID application offers various advantages and disadvantages to other sectors:

Advantages

1.   Security – The data on RFID systems are usually secure because it takes specialised equipment to read the data. This helps to maintain the lock system security.

 2.   Convenience – It only takes up a fraction of a second to put an RFID key in the proximity to unlock the security system. The procedure is highly convenient and fast.

 3.   Size – The size of the card is handy and the same as a regular bank card. Thus it is easy to store. Users have fewer chances of forgetting these cards when going to the place where they require access.  RFID cards are convenient and easy to store.

 4.   Diverse – RFID locks come with different ranges of cams and spindle length that can fit a wide range of doors and furniture, making them suitable for any business or applications.

 5.   Master Card Functionality – Different kinds of locks can use one RFID key card to program. This saves the users from the mess of having different cards for different locks while allowing each lock to have independent access policies.

Disadvantages

Despite offering numerous advantages, the RFID system even has some of the disadvantages, which are listed below:

 1.    Lost Keycard – Unlike the traditional locks, forgetting or misplacing the modern keycard gives you a double headache of figuring out how to open the lock or track back the keycard to access the appliances.

 2.    Hacker Alert – The RFID system can be hacked by someone who is tech-savvy, thus offering a security issue.

 3.    Power Shortage Issue – Electric RFID keycards malfunction when power outages, causing some lockers to shut you out or leave the lockers open. It offers a lot of uncertainty to the users of keycards.

 4.    Expensive to Set Up – The Set-Up of RFID is expensive and complex. The set-up requires that  locks are wired with a secured system that can be accessed, controlled and logged through the computer system.

 5.    Not Totally Hassle-Free – Users  need to manually change their computer clock twice a year. This is required if the server computer is not connected to the internet or if there is a time-based access restriction.

Schneider Electric India provides a wide range of RFID systems and sensors for smart operation. It offers a wide range of limit switches, proximity and presence sensors, safety sensors and switches and many more options. Do visit the Schneider Electric India website to know more about RFID key cards and sensors!

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