Disadvantages of RFID
Cost. Bar codes cost less than 1 cent, yet the most optimistic cost for RFID is eventually 5 to 10 cents per tag.
RFID signals may have problems with some materials. Metals and liquids can cause problems reading RFID tags.
RFID does not require line-of-site, but is also restricted by it. An RFID reader will read ALL tags within its range. With a bar code reader, the specific item is scanned and read, allowing you to single-out a specific item.
RFID tags can fail. Although bar code labels can fail also, when reading an entire pallet of product at one time, how do you know if there are damaged RFID tags? How are these exceptions handled?
RFID tags cannot confirm that they were NOT read. This concept is confusing, but we believe it is the most limiting issue when dealing with RFID. Stated differently: in most cases when using RFID technology, you cannot know that you were unable to read a tag. Consider several tagged items within a box passing through an RFID reader. You may read many of the tags, but you typically cannot know that you missed one or more tagged items. Other methods are sometimes employed to attempt to bypass this limitation and attempt to confirm that a tag was missed.
http://ezinearticles.com/?The-Disadvantages-of-RFID-Credit-Cards&id=163596
http://www.usingrfid.com/news/read.asp?lc=s44325nx1433zg
http://www.rossinc.com/aview.aspx?id=13266
Monday, December 1, 2008
RFID vs. Barcode
Unlike barcodes, which require an established line of sight and correct orientation with a scanner, RFID tags transmit identification data through almost any kind of packaging, so the contents of a case or pallet can be read and confirmed almost instantaneously without requiring individual product scans. By “tracking and tracing” RFID-generated data across the supply network and putting it in the context of detailed business process information. RFID can provide complete provide complete, real-time visibility into product lifecycle and supports strategic demand-driven supply network initiatives.
The differences between RFID and barcode:
● Human intervention is required to scan a barcode, whereas in most applications an RFID tag can be detected “hands off.”
● Barcodes must be visible on the outside of product packaging. RFID tags can be placed inside the packaging or even in the product itself.
● You must have “line of sight” to read a barcode. RFID tagged items can be read even if they are behind other items.
● The readability of barcodes can be impaired by dirt, moisture, abrasion, or packaging contours. RFID tags are not affected by those conditions.
● RFID tags have a longer read range than barcodes.
● RFID tags have read/write memory capability; barcodes do not.
● More data can be stored in an RFID tag than can be stored on a barcode
Unlike barcodes, which require an established line of sight and correct orientation with a scanner, RFID tags transmit identification data through almost any kind of packaging, so the contents of a case or pallet can be read and confirmed almost instantaneously without requiring individual product scans. By “tracking and tracing” RFID-generated data across the supply network and putting it in the context of detailed business process information. RFID can provide complete provide complete, real-time visibility into product lifecycle and supports strategic demand-driven supply network initiatives.
The differences between RFID and barcode:
● Human intervention is required to scan a barcode, whereas in most applications an RFID tag can be detected “hands off.”
● Barcodes must be visible on the outside of product packaging. RFID tags can be placed inside the packaging or even in the product itself.
● You must have “line of sight” to read a barcode. RFID tagged items can be read even if they are behind other items.
● The readability of barcodes can be impaired by dirt, moisture, abrasion, or packaging contours. RFID tags are not affected by those conditions.
● RFID tags have a longer read range than barcodes.
● RFID tags have read/write memory capability; barcodes do not.
● More data can be stored in an RFID tag than can be stored on a barcode
www.ruggedpcreview.com/3_definitions_rfid_vs_barcode.html
www.atlasrfidsolutions.com/rfid-vs-barcode.asp - 13k
http://www.blogger.com/www.rfidsolutionsonline.com/download.mvc/RFID-Vs-Bar-Code-0001%20-%2027k%20-
www.atlasrfidsolutions.com/rfid-vs-barcode.asp - 13k
http://www.blogger.com/www.rfidsolutionsonline.com/download.mvc/RFID-Vs-Bar-Code-0001%20-%2027k%20-
Advantages of RFID
There are numerous advantages to RFID in many industries. RFID has many advantages in the airline industry. It helps track customer luggage, whihc is lost regularly at airports. The potential savings and key business case drivers are also explored for an airline or airport looking at implementing this technology for more reliable, more accurate baggage tracking.
RFID would also be benficial in the transport industry. Identification of EPC tagged items/pallet happens automatically as the pallet moves through a receiving door equipped with an RFID reader, the exact amount and type of product is immediately known to all parties. Any discrepancies between the amount ordered and received can be automatically identified and noted for both the shipper and receiver of the goods.
RFID would allow retail companies to be more efficient in inventory management. Retailers such as walmart would be allow to have better control on their products. As soon as the item arrives, EPC compliant application having connectivity with EPCglobal Network automatically updates the inventory to include every item that arrived. It also check the reorder level and avoid out of stock items. Since product arrival and departure is captured at each point, the EPC Network enables comprehensive distribution visibility that creates a record of the chain of custody for each product. And while not actually preventing the theft of an item, or even the legitimate loss of an item, the ability to pinpoint the product when it was lost allows the manufacturer or retailer to take preventative measures for the future.
There are numerous advantages to RFID in many industries. RFID has many advantages in the airline industry. It helps track customer luggage, whihc is lost regularly at airports. The potential savings and key business case drivers are also explored for an airline or airport looking at implementing this technology for more reliable, more accurate baggage tracking.
RFID would also be benficial in the transport industry. Identification of EPC tagged items/pallet happens automatically as the pallet moves through a receiving door equipped with an RFID reader, the exact amount and type of product is immediately known to all parties. Any discrepancies between the amount ordered and received can be automatically identified and noted for both the shipper and receiver of the goods.
RFID would allow retail companies to be more efficient in inventory management. Retailers such as walmart would be allow to have better control on their products. As soon as the item arrives, EPC compliant application having connectivity with EPCglobal Network automatically updates the inventory to include every item that arrived. It also check the reorder level and avoid out of stock items. Since product arrival and departure is captured at each point, the EPC Network enables comprehensive distribution visibility that creates a record of the chain of custody for each product. And while not actually preventing the theft of an item, or even the legitimate loss of an item, the ability to pinpoint the product when it was lost allows the manufacturer or retailer to take preventative measures for the future.
RFID
What is RFID?
RFID is an ADC technology that uses radio-frequency waves to transfer data between a reader and a movable item to identify, categorize, track objects such as, animals, people, and pets.
RFID is fast, reliable, and does not require physical sight or contact between reader or scanner and the tagged item. RFID is a general term that is used to describe a system that transmits the identity of an object wirelessly, using radio waves. This is referred to as contactless technology and a typical RFID system is made up of three components tags, readers and the host computer system:
Tags - An RFID tag is a tiny radio device that is also referred to as a transponder, smart tag, smart label or radio barcode. The tag comprises of a simple silicon microchip attached to a small flat aerial and mounted on a substrate. The whole device can then be encapsulated in different materials dependent upon its intended usage. The finished tag can be attached to an object, typically an item, box or pallet and read remotely to ascertain its identity, position or state.
Readers -The reader, sometimes called an interrogator or scanner, sends and receives RF data to and from the tag via antennas. A reader may have multiple antennas that are responsible for sending and receiving radio waves.
Host Computer - The data acquired by the readers is then passed to a host computer, which may run specialist RFID software or middleware to filter the data and route it to the correct application, to be processed into useful information.
RFID is an ADC technology that uses radio-frequency waves to transfer data between a reader and a movable item to identify, categorize, track objects such as, animals, people, and pets.
RFID is fast, reliable, and does not require physical sight or contact between reader or scanner and the tagged item. RFID is a general term that is used to describe a system that transmits the identity of an object wirelessly, using radio waves. This is referred to as contactless technology and a typical RFID system is made up of three components tags, readers and the host computer system:
Tags - An RFID tag is a tiny radio device that is also referred to as a transponder, smart tag, smart label or radio barcode. The tag comprises of a simple silicon microchip attached to a small flat aerial and mounted on a substrate. The whole device can then be encapsulated in different materials dependent upon its intended usage. The finished tag can be attached to an object, typically an item, box or pallet and read remotely to ascertain its identity, position or state.
Readers -The reader, sometimes called an interrogator or scanner, sends and receives RF data to and from the tag via antennas. A reader may have multiple antennas that are responsible for sending and receiving radio waves.
Host Computer - The data acquired by the readers is then passed to a host computer, which may run specialist RFID software or middleware to filter the data and route it to the correct application, to be processed into useful information.
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