Outstanding Protection of SSN Data

From an FSA notice,explaining that travel documents show the Social Security number, which needs to be hidden:

The recommended method, provided by the Office of the Chief Financial Officer (OCFO) to hide
SSN’s, is to manually mark-out SSN’s on travel documents.
Notes: OCFO currently has no plans to modify the NFC OnLine Travel System to hide SSN’s
when travel documents are printed. Marking-out SSN’s is the only solution currently
recommended by OCFO, at this time, to protect an individual’s SSN.
An ink pen is more effective in hiding SSN’s than a felt-tipped pen.

I'm glad to see the USDA taking the protection of privacy so seriously.