WHAT IS RFID?
Radio-frequency identification (RFID) is the wireless use of electromagnetic fields to transfer data, for the purposes of automaticallyidentifying and tracking tags attached to objects. There are several methods of identification, but the most common is to store a serial number that identifies a person or object, and perhaps other information, on a microchip that is attached to an antenna (the chip and the antenna together are called an RFID transponder or an RFID tag). The antenna enables the chip to transmit the identification information to a reader. The reader converts the radio waves reflected back from the RFID tag into digital information that can then be passed on to computers that can make use of it.
RFID - A BRIEF HOSTORY:
Since 2005, Australia started issuing passports with an RFID chip in them. Europe, USA and select other countries had them issued as well. The problem is that your personal data can get read from your passport at a distance, without anyone ever opening, touching, or even coming close to your passport. These tiny chips, which transmit data, are also often embedded in ID cards, credit cards and other items.
RFID blocking protects highly sensitive personal data from being compromised, payment and identity fraud from unwanted skimming of your credit cards, such as “Paywave” and “Paypass” and other contactless credit/identity cards.
HOW DOES AN RFID SYSTEM WORK?
An RFID system consists of a tag, which is made up of a microchip with an antenna, and an interrogator or reader with an antenna. The reader sends out electromagnetic waves. The tag antenna is tuned to receive these waves. A passive RFID tag draws power from field created by the reader and uses it to power the microchip’s circuits. The chip then modulates the waves that the tag sends back to the reader and the reader converts the new waves into digital data.
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