This study deals with "open code dating," the movement by grocery manufacturers and distributors toward dating perishable food packages in such a manner that consumers can readily determine product freshness or length of time on store shelves. The study explores the desirability and feasibility of open code dating, placing greatest importance upon the response of the consumer to the concept. It was found that consumers were aware of open code dating and generally strongly desired its universal adoption. Shoppers were also confused by open dating and failed to understand freshness dates properly. The strongest desire for open dating was found in shoppers at the upper end of the socio-economic scale. Grocery retailers expressed satisfaction with open coding, believing it an aid in stock rotation and customer satisfaction. Possible disadvantages, such as increased throwaway costs and large conversion costs, were not perceived as being significant. The businessmen favored widespread adoption of open code dating. On the basis of data from interviews with shoppers, it is concluded that consumers desire adoption of open code dating and do use this service. It is also concluded that adoption of open code dating would be an economically sound decision which would constitute a desirable marketing …