What: Self-checkout and electronic shelf labels have reached mainstream adoption in German retail, but smart carts, cashierless stores and autonomous food preparation still need to prove they deliver value at scale.

Why it is important: The gap between what's mature (checkout, ESLs) and what's still unproven (carts, robotics) shows that scaling smart-store technology now depends on measurable ROI, not novelty — echoing Amazon's Just Walk Out retreat and Forbes' warning against fixating on checkout alone.

One in 10 checkouts in German food retail is now self-checkout, double the share of two years ago, while electronic shelf labels are used by 91% of retailers, according to KPMG's 2026 Retail Sales Monitor. REWE has opened its seventh Pick&Go scanless test store and trialled an unmanned REWE To Go format at Frankfurt Airport with Lekkerland and Fraport, while also using analytical AI for space and assortment optimisation across roughly 3,400 stores.

Other technologies remain earlier stage. Research on 12,418 shopping sessions found smart-cart users spent €30.18 on average versus €22.89 for non-users, bought 12.02 items rather than 9.61, and stayed 40.40 minutes versus 32.75 — an association, not proof of causation. REWE Region West's Fresh & Smart pilot with Circus Group, using a robot to prepare meals in Düsseldorf-Heerdt, remains a live test rather than evidence of readiness for wider rollout.

Kölle Zoo's rollout of around 300,000 electronic shelf labels across 28 stores freed staff for customer-facing work, illustrating how ESLs are becoming connected infrastructure rather than simple price-tag replacements. The central challenge, per the article, is defining the business problem before choosing the technology, and connecting these systems' data across large store estates rather than running isolated pilots.

IADS Notes:  Germany's push to move self-checkout, electronic shelf labels and operational AI from pilot to scale sits alongside several threads already tracked. NRF (NRF, March 2026) makes the case that electronic shelf labels deliver measurable profitability and revenue gains once deployed at volume, not just faster price updates, which is consistent with Kölle Zoo's own account of staff time freed up after its 300,000-label rollout. Journal du Net's analysis of in-store digital investment (Journal du Net, April 2026) frames connected screens and ESLs as infrastructure rather than trials, partly because store construction often blocks mobile connectivity, reinforcing why REWE and Kölle Zoo are building these systems into daily operations instead of treating them as experiments. On the checkout side, Forbes (Forbes, April 2026) warns that fixating on automation at the till misses the deeper shift toward end-to-end AI integration and workforce upskilling, a caution that lines up with the article's own point that self-checkout is only one visible layer of a broader operational AI push. Amazon's retreat from cashierless grocery in the UK (Inside Retail, October 2025) illustrates the scale test at the centre of the article: Just Walk Out failed on trust and unit economics rather than on the underlying technology, the same variables now facing REWE's Pick&Go and unmanned To Go pilots as they move past single-store trials.

Germany's retailers take smart stores to scale