Traffic credit card spending 1007 was swiped out without entering the password. What is the reason?

1, the credit card itself has been set up for small transactions.

2. Credit cards are swiped by international organizations, and like overseas transactions, password verification is not required.

3. swipe your card and take the unionpay line. Credit cards are set to successfully pay for transactions without entering a password. Some overseas UnionPay merchants only verify their signatures by swiping their cards, regardless of whether they are set as swipe verification passwords.

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