KIra, an innovative AI-driven retail assistant, transforms the in-store shopping experience by providing instant, web-based support via customers' smartphones without requiring installation or login. Activated by a simple QR code scan, KIra offers real-time answers on product details, availability, and personalized recommendations, enhancing customer satisfaction and boosting sales. Leveraging advanced GPT-4 technology, it integrates seamlessly with inventory and online shop systems to deliver accurate, multilingual responses and smart alternatives when items are unavailable. Designed for easy integration across various retail sectors, KIra complements human service by streamlining queries and freeing staff for personalized assistance. This intuitive, secure, and maintenance-friendly solution exemplifies how AI can modernize brick-and-mortar retail by combining digital intelligence with traditional customer service.