- a plastic card, similar to a credit card, containing data on an embedded magnetized strip that can electronically unlock a door, activate a machine, etc.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for keycard
The keycard and phone records would suggest the entire episode in the room took no more than nine minutes.The Evidence That Could Doom DSK
Christopher Dickey, John Solomon
July 26, 2011