Cardkey is likely misspelled.
Cardkey has no English definition.
As a noun keycard
is a usually plastic card which stores a digital signature that is used to operate an electronic access control lock.
keycard
English
Noun
(
en noun)
A usually plastic card which stores a digital signature that is used to operate an electronic access control lock.
Synonyms
* card key cardkey
Not English
Cardkey has no English definition. It may be misspelled.