Category: Shopper Marketing

Görtz: Virtual Shoe Fitting

In September last year I had written about a Nike Sneaker Customization concept from Miami Ad School. Since then, ad agency kempertrautmann, along with German shoe retailer Görtz, creates the same virtual shoe store at Hamburg Central Station and transforms a digital billboard into a point of sale for shoes.

A station billboard that behaves like a shop window

Using Microsoft Kinect gesture controls, the shopper’s feet are scanned and reproduced on the screen. A selection of shoes is then presented to try on and compare virtually. A social component lets shoppers share a snapshot of themselves with the shoes on Facebook. Those who decide to buy receive a QR code that leads to a mobile checkout, with next-day delivery.

Virtual shoe fitting is an interactive retail experience that overlays a chosen shoe style onto a live on-screen view of your feet, so you can judge look and proportion before purchasing.

In European retail environments where commuters split time between offline browsing and mobile checkout, the strongest executions connect fast “try” moments to a low-friction purchase path.

Why it lands: it compresses the path from curiosity to checkout

The idea removes the biggest barrier in out-of-home retail, which is the gap between “that looks interesting” and “I can actually get it”. The Kinect scan creates a personal moment, the virtual try-on creates confidence, and the QR code turns intent into an immediate transaction rather than a promise to remember later. That matters because each step reduces the drop-off that usually happens between public interest and private purchase.

Extractable takeaway: If you want digital out-of-home to sell, not just impress, design the experience so the last step is not “find us later”. Make the last step “buy now”, with the minimum possible handoff friction.

What the campaign is really proving

The real question is whether a public screen can do enough selling work in the moment to replace the need for a later retail visit.

It is less about tech novelty and more about role change. The billboard stops being a broadcast surface and starts behaving like a staffed shop assistant. It recognizes you, helps you evaluate options, and hands you a clear next step to purchase.

This works best when the technology serves the buying decision, not when it becomes the point of the experience.

What this retail screen gets right

  • Personalize instantly: a scan, a fit, a quick moment that feels made for the passer-by.
  • Keep choices bounded: a curated range beats a full catalog when people are in a hurry.
  • Build a shareable artifact: snapshots extend the experience beyond the station.
  • Make the handoff obvious: QR-to-checkout should feel like the natural next click, not a separate journey.
  • Promise something operationally real: next-day delivery turns “stunt” into “service”.

A few fast answers before you act

What is the core idea?

A digital billboard in a train station becomes a virtual shoe store. Shoppers try on shoes using gesture control, then complete purchase on mobile via a QR code.

Why use Kinect in a public space?

Because it enables hands-free interaction and creates a personal “fit” moment without requiring an app download or typing in a rushed environment.

What makes this different from a normal QR poster?

The poster does not only link out. It provides evaluation first. The virtual try-on is the persuasion layer, and the QR code is the conversion layer.

What is the biggest execution risk?

Latency and calibration. If the scan feels inaccurate or the overlay looks wrong, the experience loses trust and the checkout step will not happen.

What should you measure?

Interaction starts, completed try-ons, QR scans, checkout completion rate, and next-day delivery satisfaction. Those metrics show whether the billboard is acting as a true point of sale.

eMart: Sunny Sale Shadow QR Codes

Korea continues to set the standard in creative QR code campaigns. In June last year, Homeplus in South Korea used QR codes to create a virtual store in a subway station.

Now eMart, South Korea’s largest retailer, creates shadow QR codes across the city that only become visible when the sun is at the correct angle in the sky, between midday and 1pm. Consumers who scan the QR code during this period are redirected to the eMart online store, where they receive $12 coupons for products that are delivered to their homes.

Turning time into the trigger

The mechanism is a physical installation designed to cast a QR pattern as a shadow only during a narrow daily window. The code is effectively “off” for most of the day, then “on” at lunch. That forces a repeatable habit moment and makes the scan feel like a discovery rather than a prompt.

In dense, mobile-first retail markets, lunch hour is a high-frequency window where a time-boxed incentive can convert attention into immediate action.

The real question is whether you can make the trigger itself time-locked and unmistakable, so people self-schedule the behavior instead of waiting for another reminder.

A time-locked trigger is a stronger activation pattern than an always-on QR poster because the constraint becomes the story.

Why the shadow constraint works

The campaign does not just offer a discount. It creates scarcity you can see. If you miss the light, you miss the code. That turns a routine coupon into a small challenge, and it gives people a reason to talk about the “how” as much as the “what”.

Extractable takeaway: If you want to spike behavior in a specific time slot, make the call-to-action itself time-bound, not just the offer. When the trigger disappears outside the window, the audience learns the rhythm faster than they would from reminders alone.

The sundial-style QR codes, meaning the code is only scannable when sunlight hits at the right angle, were installed at 36 locations across Seoul and served more than 12,000 coupons. eMart membership increased by 58% and lunch hour sales went up by 25%.

Retail activation takeaways: time-locked QR

  • Make the rule instantly legible. “Only works at lunch” is easy to understand and easy to retell.
  • Use a constraint that creates urgency without pressure. The sun provides the timer. The brand does not need to shout.
  • Connect the scan to a clear payoff. Coupon plus delivery is a complete loop, not a teaser.
  • Design for repeat visits. A daily window encourages people to come back tomorrow, not just once.

A few fast answers before you act

What is the Sunny Sale “shadow QR code” idea?

A 3D installation casts a scannable QR code as a shadow only during a specific time window, so shoppers can unlock a coupon by scanning at the right moment.

Why limit the code to midday?

It concentrates attention into lunch hour, creates visible scarcity, and trains a daily habit around a predictable retail moment.

What makes this better than a normal QR poster?

The time-based constraint is the hook. The QR code is not always available, so scanning feels like discovery and the story becomes shareable.

How do you pick the right time window?

Choose a moment that already has repeatable footfall and intent, then make the window tight enough to feel special but wide enough that normal shoppers can realistically catch it.

What can go wrong with time-locked activations?

If the reward is weak or redemption is clunky, the constraint becomes frustration. The tighter the window, the more important the payoff and UX become.

PUMA: The World’s Fastest Purchase

PUMA Faas 500 are positioned as “fast” running shoes, so PUMA Mexico turned that promise into a store rule. The faster you complete the purchase, the bigger your discount.

It is retail gamification with a stopwatch. You take a time-stamped ticket when you enter, then hit the finish at checkout. Your elapsed time maps directly to a percentage off.

Speed, translated into a receipt

The mechanic is intentionally physical. A start button and a finish button. Two timestamps. A discount ladder, meaning predefined discount tiers tied to elapsed time. It converts a product claim into a behavior challenge shoppers can understand in one glance.

In store-based brand marketing, this kind of “simple rule. visible payoff” design is what turns a promotion into something people talk about and demonstrate. This is the right kind of promotion when the product promise is simple and the store can keep the timing fair.

In physical retail environments where staff can control flow and timing, a timed discount rule turns positioning into something customers can prove on the spot.

Why it works: tension, then relief at the till

Most discounts are passive. This one is earned under mild, playful pressure, which changes how the saving feels. Because the discount is calculated from your elapsed time, the saving feels earned rather than handed out. You are not just getting money off. You are winning.

Extractable takeaway: If you can translate a brand claim into a simple rule with a visible measurement, customers will internalize it faster and retell it more convincingly.

The case framing also borrows credibility from sport. The faster you move, the more you deserve, which fits the “fast” positioning without needing extra explanation.

What the brand is really buying

The real question is whether your operation can make the customer’s speed, not the queue, decide the discount.

Yes, it can drive conversion in the moment. More importantly, it makes “fast” measurable. The shoe is no longer described as fast. The shopping experience is fast, and the brand gets to own that feeling.

It is also a neat piece of shopper marketing craft: the discount is the reward, but the real output is attention inside the store and social retell outside it.

Borrowable moves for a speed-to-discount promo

  • Turn the product truth into a rule, not a tagline.
  • Make the measurement visible, tickets, timers, receipts, anything tangible.
  • Use a stepped reward, so “almost” still feels like something.
  • Keep the setup frictionless, one instruction. two actions. instant payoff.

A few fast answers before you act

What is the core mechanic here?

A timed in-store challenge. Entry timestamp plus checkout timestamp determines a discount tier.

Why is this stronger than a standard percent-off promotion?

Because shoppers earn the saving through behavior. That creates participation, attention, and a story, not just a transaction.

What kind of products fit this model best?

Anything with a defensible “speed” or “efficiency” claim, plus a purchase journey that can be completed quickly inside a controlled environment.

What is the biggest operational risk?

Queue dynamics. If checkout bottlenecks decide the discount, the game feels unfair. The store needs enough throughput so the customer’s speed is what matters.

How do you measure success beyond sales?

Participation rate, average completion time, discount distribution, and organic sharing that shows people proving their time and reward.