Definitions for keycard
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Princeton's WordNet
keycard(noun)
a plastic card that has a magnetically coded strip that is scanned in order to operate a mechanism
Wiktionary
keycard(Noun)
A usually plastic card which stores a digital signature that is used to operate an electronic access control lock.
Citation
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"keycard." Definitions.net. STANDS4 LLC, 2013. Web. 22 May 2013. <http://www.definitions.net/definition/keycard>.

