A scammer could call you from what looks to be a familiar number and talk to you using a voice that sounds exactly like your bank teller's, ricking you into "confirming" your address, mother's name, and card number.

一个骗子会用一个看起来很熟悉的号码给你打电话，用一种听起来很像你的银行出纳员的声音跟你说话，让你“确认”你的地址、母亲的名字和卡号。

youdao

I know the card number.

我知道卡号。

youdao

Then he proceeded to recite his card number and expiration date before signing off.

接着他开始背诵他的卡号和有效期，然后才签字。

youdao

The unique number will be put on an identity card which will have biometric authentication, such as fingerprints and photographs.

VOA: standard.2009.09.24

Is it safe to give out last 4 digits of credit card number through email?

FORBES: What Security Measures Should The Recently Wealthy Use?

My brother-in-law gave her his credit card number in order to Fed-ex to him.

FORBES: The Amazing Story Of How My Brother-in-Law Got His iPad Back From Spirit Airlines Without Losing His Identity

And starting this month, the DNA service will alert you when someone dials your calling-card number.

CNN: New features to slow the onslaught of mobile phones