Comment There's a simple fix for dynamic pricing (Score 1) 192
And that is: The register must honor the lowest price displayed in the last 6 hours.
There's nothing wrong with a store dynamically lowering prices. We just don't want them to go up while we're shopping.
Virtually all shoppers are wandering around with smartphones with cameras, so it's easy to take photos of the tags. If you catch the register not following the rules, you get some payback. (What is an implementation detail. Double the difference? One item free? Depends on how frequently that store has a problem?)
I already take photos of every sale tag when I'm shopping, just so I can confirm I'm getting the sale price. It also saves a ton of time when an item fails to scan at all; rather than them sending a runner back, I just show them the photo of the shelf and they key in the price.