I would benchmark The Kroger Company for technological innovations if I were in the grocery business. It is one of the biggest grocery stores in United States. It has adopted many digital and data based techniques in the business of grocery retailing that brings it on the top of list. They rely on data mining techniques for selling the right product at right price in right quantity at the right shelf. They have also been awarded for monitoring the temperature inside the store electronically. This technology allows them to maintain the inventory of fresh food (dairy products, etc. )all the times and ensures the safety of food. There is no need of recording the temperature manually.
