card key
noun/ˈkɑːd kiː/
/ˈkɑːrd kiː/
(especially North American English) (also key card British and North American English)
- a special plastic card with information recorded on it that can be read by an electronic device, which can be used instead of a door key
卡钥匙：一种特殊的塑料卡，上面记录有信息，可以用电子设备读取，可以代替门钥匙使用