BLOCKING READER: DESIGN AND IMPLEMENTATION OF A ...
BLOCKING READER: DESIGN AND IMPLEMENTATION OF A ...
BLOCKING READER: DESIGN AND IMPLEMENTATION OF A ...
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• Can be controlled from ethernet.<br />
• Isolated envelopes of blocking.<br />
Disadvantages of using the Blocking Reader in the warehouse<br />
• Require multiple Blocking Readers for bigger warehouse.<br />
• Will cause interference to other signals.<br />
• Needs to be turned off even an authorized person needs to read.<br />
8.3 Blocking Reader Around Human Body<br />
In this section we will discuss about how Blocking Reader works around Human<br />
Body. Previous research has shown that the presence of Human causes deformation<br />
in the read zones of a typical passive RFID systems [7]. Human body tissue is a<br />
lot of liquids and the major part is water. The property of water is absorption<br />
of RF radiations. Due to the reflection and absorption of these RF radiation the<br />
RF radiation pattern is too deformed. In the Figure 8.1 shows an simulation of a<br />
monopole antenna in presence of Human Body, 0.3m in front of it.<br />
A Blocking Reader can be used to prevent an unauthorized read of a persons<br />
RFID enabled credit cards. Also Prevent unauthorized reads of personal things at<br />
a public place. An important application will be to block the unauthorized read of<br />
your human implanted tags in the public place causing breach of privacy, leading to<br />
tracking.<br />
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