text:  Less than that, even. Digital price tags are one of the ways that retailers are experimenting with what is more largely known as dynamic pricing. If a retailer gets a signal that sales are slowing down or that the store is getting crowded, either way, they can move prices up and down pretty much instantaneously. And it's a largely automated process, so it would happen without a bunch of human intervention either on the central side or on the store side.