Computing term for the physical or logical mechanism that reads data from a card, such as a magnetic stripe or IC card reader.
The card reader mechanism of this ATM is broken.
The card reader mechanism supports both magnetic stripes and IC chips.
カードリーダー is a more common and general term for a card reader device, while カード読取り機構 specifically refers to the reading mechanism or unit, often in a technical or engineering context.
Compound of カード (card), 読取り (reading), and 機構 (mechanism). A straightforward technical term.