As I discussed in my Consumers Rule! column, Pam Sweeney, Macy’s senior VP of logistics systems, and I were on an RFID panel about omnichannel retailing at the National Retail Federation conference in January. I spoke about the value of seeing the “last unit. ” Pam said, “it is not the last unit, it is the single unit. ” What did Pam mean by the single unit? Imagine this scenario.