code wheel
A flat circular object consisting of concentric portions printed with codes or patterns that appear at certain positions as the wheel is rotated, used as a form of copy protection distributed with older video games.
(obsolete) Forfeiture.
plural of Mahaffey
A surname.
博物館の展示には、開発者がゲームの不正コピーを防ぐために使っていた1980年代の、コードが印刷された回転式の円盤が展示されていました。
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