医生正在通过指纹识别确认病人的身份。

The doctor is ___identifying the patient by checking fingerprints.

进入酒吧前，保安要求我们出示身份证件。

The bouncer asked us to ___ID before entering the club.

工作人员给每件行李贴上标签以便识别。

The staff is ___IDing each piece of luggage with a tag for identification.