This document proposes enhancing ATM security through iris recognition. It begins with an introduction to ATMs and discusses limitations of current security methods like PINs and fingerprints. Iris recognition is presented as an alternative biometric for identification. The document outlines how iris recognition works, its advantages of being accurate, stable and difficult to forge. Potential disadvantages like cost and small iris target are noted. It concludes iris recognition could provide more reliable security for ATM use by allowing quick, permanent identification without PINs or cards.