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It is a plastic card which consists of a magnetic stripe or a chip incorporated with encoded data that is read by placing the card over an electronic device.
Posted by Tradeindia user (07-09-2020)
It is used to provide access to an area that is restricted. It used in offices, secure places, government buildings, etc. as it doesn't allow any outsider to enter the zone without permission.
It is a security token that grants access to a person through electrically-powered doors, such systems require a keycard reader and one can gain access by either tapping, swiping or inserting the issues card on the reader.