key card
Word forms: key cards
countable noun
A key card is a small plastic card which you can use instead of a key to open a door or barrier, for example in some hotels and car parks.
We kept taking it in turns to try the key card and got the giggles.
Image of key card
© 08/05/2018, Shutterstock
Translations:
Chinese: 门卡
Japanese: カード式かぎ