I am a graphic designer so I can print up a believable business card for any purpose nearly as fast as Jim Rockford. And yet I have never had a good reason to do so, but if you are shadier than me and find yourself needing to come across as an official in the fields of... Corrections, Highway Patrol, Homeland Security, Police, Security Private, or Sheriff. This site seems ready to oblige.
gfx.ecardbuilder.com (CAUTION: link goes directly to official cards.)
Am I going to order any? Hell no! I am probably already looking at an unsettling visit from guys with actual business cards just for posting this story.