# 為什麼要填寫信用卡的檢查碼（背面末三碼）？

信用卡檢查碼是一個由信用卡公司為避免無實體信用卡交易(例：網路交易)的詐欺所建立之授權動作。

信用卡檢查碼的授權可以確保進行交易之顧客確實持有該信用/簽帳卡，而非使用偷竊或複製之信用卡。

為加強您的交易安全保障，因此麻吉付在設定信用卡時需請用戶們先提供信用卡檢查碼，一旦產生消費需要同意授權時，無須再臨時輸入信用卡號及檢查碼，只需要按同意按鈕即可授權嘍！


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