keycard

About 0.01 uses per million words.

Meaning

1. noun A usually plastic card which stores a digital signature that is used to operate an electronic access control lock.
2. noun In Roman keycard Blackwood, an ace of any suit or the king of trumps.

Similar words

key card keycode carkey change key combination lock lock key passcode keycap identification card keyswitch

Often followed by

and to in into blackwood from through on for