请问有关报名时ID的问题

艾德

在MBA网报完名最后显示的一段英文里说When you arrive at the test center you will be required to present at least one form of GMAC®-approved, non-expired, government-issued identification (ID) that clearly shows your name (in Roman characters, as in this letter), photograph, signature, and date of birth.

The test administrator cannot allow you to test if your ID is not an approved form of ID, or it does not contain all four of the elements listed above, or it does not match the name and date of birth you provided when you registered for the exam. If your ID is missing one of the four elements (such as a signature), or has expired, you will need to present a second form of GMAC®-approved, non-expired, government-issued identification (ID) (matching the name on the first ID) that has the missing element, or is not expired.



这四个条件里signature哪里有啊？