RFID is Short for radio frequency identification. It is similar to the bar code technology. With RFID, the electromagnetic or electrostatic coupling in the RF portion of the electromagnetic spectrum is used to transmit signals. An RFID system consists of an antenna and a transceiver, which read the radio frequency and transfer the information to a processing device, and a transponder, or tag, which is an integrated circuit containing the RF circuitry and information to be transmitted. One of the key differences between RFID and bar code technology is RFID eliminates the need for line-of-sight reading that bar coding depends on. Also, RFID scanning can be done at greater distances than bar code scanning. High frequency RFID systems (850 MHz to 950 MHz and 2.4 GHz to 2.5 GHz) offer transmission ranges of more than 90 feet, although wavelengths in the 2.4 GHz range are absorbed by water (the human body) and therefore has limitations.
Read the five myths about RFID:
http://www.isp-planetcom/fixed_wireless/technology/2003/rfid_myths.html
If RFID is so limited why the big fuss? I think this technology is neutral, it is neither good or bad it is how it is used. The odds of being used for bad are great, although they don’t have much range right now they can at a latter date. Merchants see it as a way to keep up with their inventory without scanning it by hand and in the long run saving money. But it is wireless technology and it can be hacked. There is talk of putting RFID in our money. Could a thief take a look inside your wallet and see how much money you have on you and then take it from you? The technology is also writeable as well as readable. Could a thief scan the RFID in you horse and make it change from you as owner, to them as the owner? Some people see it as the sign of the end times, the mark of the beast. I see it as a possible invasion of privacy. I think there should be laws on what these can and cannot do.
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