noun
Refers to an electronic device that reads data from a card, such as a credit card, IC card, or memory card.
このカードリーダーはICカードに対応しています。
This card reader supports IC cards.
noun
card reader (diviner); cartomancer
Refers to a person who practices cartomancy, i.e., fortune-telling using cards. Less common than the device sense.
彼女はプロのカードリーダーとして占いの店を開いた。
She opened a fortune-telling shop as a professional card reader.