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RFID CARDS – CONTACTLESS SMART CARDS
Instead of contact pads, contactless smart cards use an embedded
antenna that is attached to the chip to transfer information stored
in the chip's memory to a remote computer. New information is written
into the chip in the same way.
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Contactless cards do not have to be inserted
into a card acceptor device. Instead, they need only be passed
within range of a radio frequency acceptor to read and store
information in the chip. The range of operation is typically
from about 2.5" to 3.9" (63.5mm to 99.06mm) depending on the
acceptor. |
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Contactless smart cards are used in many of
the same applications as contact smart cards, especially where
the added convenience and speed of not having to insert the card
into a reader is desirable. There is a growing acceptance of
this type of card for both physical and logical access control
applications. Student identification, electronic passport, vending,
parking and tolls are common applications for contactless cards. |
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