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Wednesday, October 12, 2011

The Usage of RFID Scanner

By Dave Nelson

What is RFID? RFID works like a barcode, that is to provide a unique identifier for a certain object and the RFID stands for Radio Frequency Identification. This RFID is an electronic device that is composed of an antenna and a chip that even so tiny it can store up to 2000 bytes of data. To be able to retrieve the identifying information the RFID like the barcode needs to be scanned.

The RFID has three parts and these are the antenna, the transceiver and the transponder. The transceiver receives and interprets the data while the transponder or the RFID tag is the one programmed with the objects information. The RFID works only in a short range. The scanning antenna is the one that will send radio frequencies that is communicated to the transceiver and transponder.

Benefits of RFID

No Special Positioning Needed - Positioning is important in every scanning so that information can be read well, but in the case of RFID positioning is not necessary because RFID tags can be read in any orientation and even hidden tags can be scanned as long as the radio frequency is still at its range or shorter. Unlike barcodes RFID needs no lens to clean and line-up. RFID also can be embedded in the product during manufacture unlike barcodes that needs to be shown. Also RFID scanner does not need to be very near with the tag to be scanned.

RFID is Easy to Install - If you would ask people who have installed RFID they would for sure tell you that it is just easy like singing the ABC. The installation process does not include lining up optics since RFID does not have one. Just make sure to connect the RFID anywhere without the presence of a conductive material that can weaken the radio frequency signal.

RFID can Identify Moving Objects -Barcodes need to be still in scanning but RFID need not to be still. RFID works just fine even on a moving object. The catch here is that the radio frequency must just be at range. Forklifts and tracks use RFID in loading and unloading objects and RFID is also use to track items that pass through the gate of the establishment.

Read and Write Tags - The most common use of RFID scanner is to read tags, but did you know that it can also write tags. In a barcode you have to replace the label if you want to change the information but with RFID you can just write the new information in the selected tag.

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