“What are these all about? We are told that they were camera calibrating devices. American spy planes in the 1950s and 1960s flew overhead, taking photos. But to take a good photo, a camera needs precise measurements for focusing. These bar codes provided the masters. Anyway, that’s the official line. In half a century, none of this leaked out. It makes you wonder. How many things have never leaked out? How many don’t leak out today, and won’t for 50 years?”
http://teapartyeconomist.com/2013/02/20/klaatu-barada-bar-code-bar-codes-visible-from-outer-space/
