SATO CL408E Guía Del Usuario

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21/10/2004 
 
 
    Page 11 of 44 
RFID readers are capable of automatically recognising and distinguishing all the RF tags 
 
IFFERENCES BETWEEN RFID AND BARCODES 
 
 
: What are the differences between barcodes 
and 
chnology, which employs 
an 
tags 
was 
and, 
t
: Why are line-of-sight barcode readers at a disadvantage over RFID readers? 
en 
at 
-
: Will RFID technology ever replace the ever-present barcode? 
er-present barcode 
 
odes. 
IFFERENT TYPES OF RFID 
within their reading field. This capability allows the RFID reader to simultaneously process
all the data and provide for efficient material handling, packaging, and sorting of inventory. 
Not only will these RFID readers be able to track tagged items and equipment, but they 
can also be used to track patients (i.e. in hospitals).  
 
D
RFID and barcode are both identification technologies that allo
identification data to be stored and read back with a reader. While
barcodes have been around for ages, the idea of 
using RFID in applications such as supply chain 
management is a new concept. Hence, RFID has
been coined as the “wireless” or “radio” barcode.  
 
Q
RFID?
  
In contrast to barcode te
optical reader to read data, RFID reads data 
using radio technology. The concept of RFID 
driven by its greater data capacity that enables it 
to 
carry more information than barcodes. RFID 
technology also enables tag reading from a 
greater distance, even in harsh environments
unlike optical barcode readers, has no line-in-
s in order to send and receive information.  
 
sight requiremen
Q
Line-of-sight between the label and a barcode reader is often difficult, unfeasible, or ev
impossible to achieve in industrial environments due to conditions such as dust or label 
fading. By transferring data via radio waves, RFID has an advantage over barcodes in th
RFID tagged objects could be read through packaging, whether or not they can be seen 
by our eyes. RFID solutions can thus significantly condense redundant inventory stock, 
help to reduce inventory loss, and facilitate better quality assurance by providing the end
user with real-time product information.   
 
Q
SATO believes that RFID tags will not replace, but complement the ev
system. Given the growing popularity and viability of RFID, it can be expected that majority
of the industries using barcode technology will experience pressure to implement RF 
(radio frequency) tagging systems to some extent, to complement or supplement barc
 
D