“Walmart plans to replace traditional price stickers with electric shelf labels. 

Once installed, the price tags will allow the store to change the price on items as frequently as every 10 seconds. That means a store could make the call to drop the price of a product that’s expected to expire soon or raise the cost of a high-demand item with the click of a button…

The digital tags reduce the amount of time associates need to spend walking the floor to change paper tags by hand. In the test store, they’ve increased productivity and simplified stock replenishment, ultimately allowing for things to happen faster but also with less staff.”

From PCMag.