The wording "Carry" needs to be changed to " Must be in possession of" and should match

6VAC20-171-320-7 " must be in possession of"

This is critical in the Electronic Security industry where the technicians are in crawl spaces and ceilings pulling cables on aregular basis. They regulary leave their wallets and such in their trucks to prevent loosing them. 

Changing to carry would result in lost ID cards and replacements issues.