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key card

American  

noun

  1. 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.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

With a digital key card for Chuck’s Arcade starting at $10, the buy-in to try out the space isn’t large, but this felt like a tentative step into adulthood.

From Los Angeles Times • Aug. 28, 2025

As he slipped the key card into the reader on his hotel room door and tried the handle - to no avail - he realised what he had done.

From BBC • Aug. 15, 2024

In fact, the company says it is now properly authorized to use the soap as well as a newly created tool that resembles a key card.

From New York Times • Apr. 11, 2024

Popular requests include tech-savvy dog doors such as ones with a sensor that essentially acts like a key card.

From Seattle Times • Jun. 9, 2023

Then he shrugged and handed me a key card, a visor, and some gloves.

From "Ready Player One: A Novel" by Ernest Cline

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.