“In God we trust” was the motto of a Philadelphia regiment in 1748. Francis Scott Key’s “Star Spangled Banner” (1814) contains the words “In God is our trust.” The association of Odd Fellows used the motto “In God we trust” in the 1840s and 1850s. In 1864, a United States coin was minted with the motto “in God We Trust.” In 1956, “In God We Trust” was made the official United States national motto.
   
“In God we trust. All others we polygraph” is a jocular saying that has been printed on many images. The polygraph (or “truth detector”) saying has been cited in print since at least 1982.
 
“In God we trust. All others pay cash” and “In God we trust. All others must bring data” are related sayings.
     
 
Wikipedia: In God we trust
“In God We Trust” is the official motto of the United States. It was adopted as the nation’s motto in 1956 as an alternative or replacement to the unofficial motto of E pluribus unum, which was adopted when the Great Seal of the United States was created and adopted in 1782. Many people (including Atheists) have expressed objections to its use, and have sought to have the religious reference removed from the currency, claiming that it violates the First Amendment.
 
“In God we trust” first appeared on U.S. coins in 1864 and has appeared on paper currency since 1957. A law passed in a Joint Resolution by the 84th Congress (P.L. 84-140) and approved by President Dwight Eisenhower on July 30, 1956 declared IN GOD WE TRUST must appear on currency. This phrase was first used on paper money in 1957, when it appeared on the one-dollar silver certificate. The first paper currency bearing the phrase entered circulation on October 1, 1957.
   
2 March 1982, Chicago (IL) Tribune, “‘Williams killed 23’; case closed” by Charles Madigan, pg. 6, col. 1:
One of the detectives pointed to a makeshift sign on the wall. It said, “In God we trust; all others we polygraph.”
         
1 May 1982, Atlanta (GA) Constitution, “Congregation Thinks Priest Is All Wet” by Ron Hudspeth, pg. 1B, col. 1:
Sign in the Atlanta Police Department: “In God We Trust, Others We Polygraph.”
 
Google Books
Polygraphs in the Workplace:
The Use of “lie Detectors” in Hiring and Firing : Hearings Before the Subcommittee on Employment Opportunities of the Committee on Education and Labor, House of Representatives, Ninety-ninth Congress, First Session, on H.R. 1524 ... H.R. 1924 ... Hearings Held in Washington, DC on July 30, and September 18, 1985
Washington, DC: U.S. Government Printing Office
1986
Pg. 120:
In God We Trust: Others We Polygraph
— Motto on an office wall, The Pentagon, Washington. D.C.
 
Google Books
How the Platform Professionals Keep ‘em Laughin’
By Jeanne Robertson and Robert Henry
Houston, TX: Rich Publishing Company
1987
Pg. 220:
Sign on bulletin board in police homicide division: “In God We Trust — all others we polygraph.”
 
Google Books
Lie Detectors:
A Social History
By Kerry Segrave
Jefferson, NC: McFarland & Company, Inc.
2004
Pg. 157:
Lykken had also apparently discovered a motto on an office wall at the Pentagon, “In God We Trust: Others We Polygraph.”
   
Google Books
Windows into the Soul:
Surveillance and Society in an Age of High Technology
By Gary T. Marx
Chicago, IL: University of Chicago Press
2016
Pg. 69:
In God we trust. All others we polygraph.
POLYGRAPHER’S MOTTO
 
Twitter
Naveed Jamali‏
@NaveedAJamali
Replying to @NaveedAJamali @TrueFactsStated
So in sum “in god we trust, all others we polygraph.” Carry on.
1:31 AM - 8 Aug 2017