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Will RFID replace bar codes?Probably not. Bar codes are inexpensive and effective for certain tasks. It is likely that RFID and bar codes will coexist for many years.Are there any health risks associated with RFID and radio waves?RFID uses the low-end of the electromagnetic spectrum. The waves coming from readers are no more dangerous than the waves coming to your car radioWhy is RFID better than using bar codes?RFID is not necessarily "better" than bar codes. The two are different technologies and have different applications, which sometimes overlap. The big difference between the two is bar codes are line-of-sight technology. That is, a scanner has to "see" the bar code to read it, which means people usually have to orient the bar code towards a scanner for it to be read. Radio frequency identification, by contrast, doesn’t require line of sight. RFID tags can be read as long as they are within range of a reader. Bar codes have other shortcomings as well. If a label is ripped, soiled or falls off, there is no way to scan the item. And standard bar codes identify only the manufacturer and product, not the unique item. The bar code on one milk carton is the same as every other, making it impossible to identify which one might pass its expiration date firstHow does an RFID system work?An RFID system consists of a tag, which is made up of a microchip with an antenna, and an interrogator or reader with an antenna. The reader sends out electromagnetic waves. The tag antenna is tuned to receive these waves. A passive RFID tag draws power from field created by the reader and uses it to power the microchip’s circuits. The chip then modulates the waves that the tag sends back to the reader and the reader converts the new waves into digital dataHow do I know which frequency is right for my application?Different frequencies have different characteristics that make them more useful for different applications. For instance, low-frequency tags are cheaper than ultra high frequency (UHF) tags, use less power and are better able to penetrate non-metallic substances. They are ideal for scanning objects with high-water content, such as fruit, at close range. UHF frequencies typically offer better range and can transfer data faster. But they use more power and are less likely to pass through materials. And because they tend to be more "directed," they require a clear path between the tag and reader. UHF tags might be better for scanning boxes of goods as they pass through a bay door into a warehouse. It is probably best to work with a consultant, integrator or vendor that can help you choose the right frequency for your applicationDo all countries use the same low-, high and ultra-high frequencies?Most countries have assigned the 125 kHz or 134 kHz area of the radio spectrum for low-frequncy systems, and 13.56 MHz is used around the world for high-frequency systems. But UHF RFID systems have only been around since the mid-1990s and countries have not agreed on a single area of the UHF spectrum for RFID. Europe uses 868 MHz for UHF and the U.S. uses 915 MHz. Until recently, Japan did not allow any use of the UHF spectrum for RFID, but it is looking to open up the 960MHz area for RFID. Many other devices use the UHF spectrum, so it will take years for all governments to agree on a single UHF band for RFID. Government’s also regulate the power of the readers to limit interference with other devices.How much information can the tag store?It depends on the vendor and the application, but typically a tag would carry no more than 2KB of data—enough to store some basic information about the item it is on. Companies are now looking at using a simple "license plate" tag that contains only a 96-bit serial number. The simple tags are cheaper to manufacture and are more useful for applications where the tag will be disposed of with the product packaging.What are some of the most common applications for RFID?RFID is used for everything from tracking cows and pets to triggering equipment down oil wells. It may sound trite, but the applications are limited only by people’s imagination. The most common applications are tracking goods in the supply chain, reusable containers, high value tools and other assets, and parts moving to a manufacturing production line. RFID is also used for security (including controlling access to buildings and networks) and payment systems that let customers pay for items without using cashWhat is the read range for a typical RFID tag?The read range of passive tags (tags without batteries) depends on many factors: the frequency of operation, the power of the reader, interference from metal objects or other RF devices. In general, low-frequency tags are read from a foot or less. High frequency tags are read from about three feet and UHF tags are read from 10 to 20 feet. Where longer ranges are needed, such as for tracking railway cars, active tags use batteries to boost read ranges to 300 feet or more. 

Will RFID replace bar codes?Probably not. Bar codes are inexpensive and effective for certain tasks. It is likely that RFID and bar codes will coexist for many years.Are there any health risks associated with RFID and radio waves?RFID uses the low-end of the electromagnetic spectrum. The waves coming from readers are no more dangerous than the waves coming to your car radioWhy is RFID better than using bar codes?RFID is not necessarily "better" than bar codes. The two are different technologies and have different applications, which sometimes overlap. The big difference between the two is bar codes are line-of-sight technology. That is, a scanner has to "see" the bar code to read it, which means people usually have to orient the bar code towards a scanner for it to be read. Radio frequency identification, by contrast, doesn’t require line of sight. RFID tags can be read as long as they are within range of a reader. Bar codes have other shortcomings as well. If a label is ripped, soiled or falls off, there is no way to scan the item. And standard bar codes identify only the manufacturer and product, not the unique item. The bar code on one milk carton is the same as every other, making it impossible to identify which one might pass its expiration date firstHow does an RFID system work?An RFID system consists of a tag, which is made up of a microchip with an antenna, and an interrogator or reader with an antenna. The reader sends out electromagnetic waves. The tag antenna is tuned to receive these waves. A passive RFID tag draws power from field created by the reader and uses it to power the microchip’s circuits. The chip then modulates the waves that the tag sends back to the reader and the reader converts the new waves into digital dataHow do I know which frequency is right for my application?Different frequencies have different characteristics that make them more useful for different applications. For instance, low-frequency tags are cheaper than ultra high frequency (UHF) tags, use less power and are better able to penetrate non-metallic substances. They are ideal for scanning objects with high-water content, such as fruit, at close range. UHF frequencies typically offer better range and can transfer data faster. But they use more power and are less likely to pass through materials. And because they tend to be more "directed," they require a clear path between the tag and reader. UHF tags might be better for scanning boxes of goods as they pass through a bay door into a warehouse. It is probably best to work with a consultant, integrator or vendor that can help you choose the right frequency for your applicationDo all countries use the same low-, high and ultra-high frequencies?Most countries have assigned the 125 kHz or 134 kHz area of the radio spectrum for low-frequncy systems, and 13.56 MHz is used around the world for high-frequency systems. But UHF RFID systems have only been around since the mid-1990s and countries have not agreed on a single area of the UHF spectrum for RFID. Europe uses 868 MHz for UHF and the U.S. uses 915 MHz. Until recently, Japan did not allow any use of the UHF spectrum for RFID, but it is looking to open up the 960MHz area for RFID. Many other devices use the UHF spectrum, so it will take years for all governments to agree on a single UHF band for RFID. Government’s also regulate the power of the readers to limit interference with other devices.How much information can the tag store?It depends on the vendor and the application, but typically a tag would carry no more than 2KB of data—enough to store some basic information about the item it is on. Companies are now looking at using a simple "license plate" tag that contains only a 96-bit serial number. The simple tags are cheaper to manufacture and are more useful for applications where the tag will be disposed of with the product packaging.What are some of the most common applications for RFID?RFID is used for everything from tracking cows and pets to triggering equipment down oil wells. It may sound trite, but the applications are limited only by people’s imagination. The most common applications are tracking goods in the supply chain, reusable containers, high value tools and other assets, and parts moving to a manufacturing production line. RFID is also used for security (including controlling access to buildings and networks) and payment systems that let customers pay for items without using cashWhat is the read range for a typical RFID tag?The read range of passive tags (tags without batteries) depends on many factors: the frequency of operation, the power of the reader, interference from metal objects or other RF devices. In general, low-frequency tags are read from a foot or less. High frequency tags are read from about three feet and UHF tags are read from 10 to 20 feet. Where longer ranges are needed, such as for tracking railway cars, active tags use batteries to boost read ranges to 300 feet or more. 

 What is RFID technology?RFID radio frequency identification is a non-contact automatic identification technology that uses radio frequency signal automatic target recognition and access to relevant data, identify work without human intervention, can work in a variety of harsh environments. RFID technology can identify fast moving objects can also identify multiple tags, the operation quickly and conveniently.RFID is a simple wireless system, only two basic components, the system for control, object detection and tracking. System consists of an interrogator (or reader) and a lot of transponder (or tag) components.Classification of RFIDRFID frequency by application is divided into different frequency (LF), High Frequency (HF), Ultra High Frequency (UHF), microwave (MW), the representation of the corresponding frequencies were: LF 135KHz less high frequency 13.56MHz, ultra- HF 860M ~ 960MHz, microwave 2.4G, 5.8GRFID in accordance with the energy supply is divided into passive RFID, active RFID, and semi-active RFID. Passive RFID reader from the past, low prices; active RFID can provide longer read range, but requires battery power, the cost to be higher for long-distance reader applications.What are the basic components of RFID?Tag (Tag): the coupling components and chips, each tag has a unique electronic code, attached to the object to identify the target object;Reader (Reader): read (sometimes also write) tag information devices can be designed for handheld or fixed;Antenna (Antenna): between the tag and reader radio frequency signal transmission.RFID technology, the basic working principle is what?The basic working principle of RFID technology is not complicated: Tag into the magnetic field, readers receive the RF signal emitted by virtue of induced current obtained by sending out the energy stored in the chip of product information (PassiveTag, passive tags or passive tags), Or take the initiative to send a signal frequency (ActiveTag, active tags or active tags); reader to read and decode the information, to a central information system for data processing.A complete RFID system is determined by the reader (Reader) with electronic tags (TAG) is the so-called transponder (Transponder) and application software systems composed of three parts, its working principle is launching a specific frequency Reader radio wave energy to the Transponder, Transponder circuit for driving the internal data sent, received the order at this time Reader will interpret data sent to the application will be handled accordingly.With RFID card reader and electronic communications between the labels and the energy point of view generally can be divided into induction, inductive coupling (InductiveCoupling) and backscatter coupling (BackscatterCoupling) two kinds, generally low-frequency RFID mostly using the first-in, while the higher frequency they use the second approach.Reader according to different structures and techniques may be read or read / write device, the RFID system information control and processing center. Usually coupled to the reader module, the transceiver module, the control module and interface unit. Between reader and transponder generally use half-duplex communication for information exchange, while the reader through a passive transponder coupled to provide energy and timing. In practical applications, can be further achieved via Ethernet or WLAN and other identifying information of the object collection, processing, and remote transmission and other management functions. Transponder information carrier is an RFID system, the transponder is mostly present originals by the coupling (coil, microstrip antennas, etc.) and micro-chips passive element.What makes the retailer so respected RFID?According to the company's retail analyst estimates SanfordC.Bernstein, through the use of RFID, Wal-Mart could save $ 8.35 billion annually, mostly because you do not purchase a barcode manually check the savings in labor costs. Despite the additional $ 8 billion, some analysts believe this figure is too optimistic, but there is no doubt, RFID can help solve the problem of the two largest retail trade: goods out of stock and loss (due to theft and supply chain to be disturbed for the loss of product) , and now is the theft of a single Wal-Mart loss of almost a year is 20 billion dollars, if a legitimate business turnover can reach this figure, it is possible in the United States 1000 largest companies list ranked No. 694 . Research firm estimates that RFID technology can help to reduce theft and inventory levels by 25%.Typical applications of RFID technology is what?1, the product performance: most of the products due to covering the frequency 868MHz to 915MHz, the system requirements of the corresponding read-write device can be reduced, reduce the sensitivity of the frequency deviation.2, the product line: EPCCLASS1GEN2 and ISO18000-6C.3, professional services: targeted use of the world's advanced product experience, specifically oriented to commonly used products that do special consideration.4, adaptation: logistics and supply management, manufacturing and assembly, airline baggage handling, mail, express parcel processing, document tracking, library management animal identity, sports timing, access control, electronic tickets, automatic toll road from the large long-range UHF tags to small UHF tags. Customers can make customized production to meet various requirements.RFID DescriptionMeeting international ISO15693, ISO18000-6B, EPCG2 other standards, using different antenna designs and packaging material can be made of various forms of labels, such as vehicle labels, pallet labels, logistics labels, metal labels, book labels, label liquid , personnel access control labels, tickets labels, luggage labels. Customers may need to select or customize the corresponding electronic label.InlayCan be packaged into various forms of electronic tags. Applied to the label and OEM customers label production, as well as large quantities of ...LabelPeel the backing paper pasted directly on the paper box on the realization "that is affixed to shipping" process. For logistics, supply chain management, etc. ...Standard cardPVC laminated standard cards, holding in your hand or worn on the chest. Mainly used in personnel management, library management and vehicle management, etc. ...Metal tagMetal tag, can be directly pasted on the device with a metal housing. Mainly applied to the chassis, boards and other asset management fields. ...Vehicle tagPasted directly on the upper inner surface of the windshield or inserted in the label holder with. Mainly used in automotive management. ...Tag labelsHanging objects to be identified on the attached. Mainly used in high-end clothing and asset management. ...Animal TagsUsing a dedicated animal ear tag pliers, the label fitted with livestock ear. Mainly used for animal breeding, disease prevention and control, meat quarantine ...Pallet labelsWhen used directly into the plastic tray clearance holes through the positioning hole with a nail or a label fixed to the wooden pallet center. Mainly suitable ...Tickets labelHold in your hand or worn on the chest. For access to evidence and ticket management meetings and other fields. ...Luggage tagsPeel the backing paper pasted directly on the object to be identified. Mainly applicable to airline baggage management, postal parcel management, logistics tracking tube ...Books tabPasted directly within the book. Mainly used in libraries, bookstores and other places. ...Jewelry tagWhen used to all kinds of jewelry hang tag on the ring, you can normally use, easy jewelry industry management of all types of jewelry products.RFID reader deviceOnly when reading and writing devices, RFID can play its role. RFID reader device with RFID reader, RFID reader module, currently on the market are relatively high cost and YW-201 YW-601U and YW-601R and so on. These devices can be read from or written to the RFID data, and to achieve a good encryption. Distances are WV-CID1500, WV-VID1500 distance can reach 1.5 km.Metals and liquid environment impact of RFIDRFID UHF (UHF) Tag backscatter due to electromagnetic (Backscatter) characteristics of the metal (Metal) and the liquid (Liquid) and other environmental sensitive to the operating frequency to cause this passive tag (Passivetag) having a metal surface is difficult to objects or liquid environment for work, but such issues as technology development has been fully resolved, for example, Han Shuo (SONTEC) label the company that developed on the metal or liquid environment for the application of passive tags intact reading products, to facilitate the application of the above circumstances deployment environment or RFID.