At 13:47:42 on 03/01/2007, Ronald Raygun delighted uk.finance by announcing:
To provide an indication as to whether a dead person is trying to apply for a passport.
(For the purposes of this illustration, I'm looking at someone born in after 1969).
If John Quincy Doe, born in Little Wibbley on 1/12/1970 applies for a passport and a check of the register shows that a John Quincy Doe, born in Little Wibbley on 1/12/1970, died in Upper Bottomley on 3/2/1971 then I'd expect Mr. Doe's application to be checked quite thoroughly.