Most stores use receipts to prove a purchase happened. MARU-K asks a stranger question: what if the receipt could remember the store?
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In this experimental interface, a late-night aisle becomes a record assembled from small traces: a time stamp, a location, a product, the glow that’s still on at 03:12. The receipt is no longer just a checkout artifact. It becomes the system’s memory—and a way to explore what happened without turning the experience into a conventional dashboard.
Built entirely with HTML, CSS, and JavaScript, the project treats visual details as functional clues. Its field-manual framing makes the interface feel less like an app explaining itself and more like a document recovered from a working place. For technology-minded readers, the intriguing question is how far a familiar format can stretch before it becomes a new kind of interface.
The full case study follows the design decisions behind MARU-K’s aisle census, including the moment a receipt stops being a record of what you bought and starts revealing something else about the night.
Read the full design teardown → · Visit the live room
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