In the City of Keuka NY is there a building code that requires safety glass in doors of businesses open to the public?
The code NZS 4223:Part3:1999 requires that safety glass to be permanently marked for easy identification. The marking is regularly in a base corner so that it is visible when installed, but can be on the rim of thicker toughened glass.
yes there is i once lived there
Yes, reference international building codes. Pretty much all codes require this