With all of the effort by retailers to lure shoppers into their stores, one would think that granting those customers an easy and painless exit would be a priority. One would be wrong.
A few years ago, Walmart made an impressively clever attempt, leveraging mobile in-store. That experiment, which never got beyond the experimental stage, had shoppers scanning every item as they placed it in their cart. Then when it came time to check out, they would use the self-checkout lane. But instead of rescanning every item, they would display a single barcode from the Walmart trial mobile app that would quickly tell the POS every item being purchased.