New EFR Study Shows Foodservice Case Coding Rose to 69% in 2001 The foodservice industry's use of bar codes on cases and inner packs increased significantly in 2001, according to a new survey conducted by Efficient Foodservice Response (EFR). The survey of six foodservice distribution facilities showed that case coding rose to 69 percent - up from 61 percent in 2000 and 54 percent in 1999.  Ninety-two percent of inner packages assessed in the survey included a bar code.