MasterCard customers currently use a system called SecureCode to verify their identity while shopping online.

目前，万事达卡用户在网购时使用一个名为安全码的系统验证用户身份。

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MasterCard customers currently use a system called SecureCode to verify their identity while shopping online.

目前，万事达卡用户在网购时使用一个名为安全码的系统验证用户身份。

youdao