The two largest discount chains in Poland have been introduced as a standard by modern displays, where customers can see what has been "picked up" at the checkout.
It addresses great 3 important issues for the buyer and retailer:
1. "Confidence and calmness of the buyer" that he will pay for what he actually bought.
2. "Transparency of price controls" - the customer can see if the price at the checkout is the same as it was displayed on the shelf.
3. "Openness and transparency of the retailer" - a thing that works subliminally, but how important for the image of the chain.
Both chains differ on the level of additional communication on the displays. Biedronka allows customers to easily comment on the level of shopping satisfaction - interesting, positive, but probably rarely used. Lidl went further and displays the advertisements of its promotions - but the shopping is over, so it would be better to communicate the quality elements of its own offer, eg quality control, BIO products, Polish products, etc.
Comparing these solutions to other retailers, they are more modern, much better thought out and show the practical side of "Customer Care".